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Gardening Without Irrigation: or without much, anyway
by Steve Solomon
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Spacing: Early-maturing savoy varieties are naturally smaller and may not experience much hot weather before heading up—these may be separated by about 30 inches. The later ones are large plants and should be given 4 feet of space or 16 square feet of growing room. Sow and grow them like broccoli. Transplant overwintered cabbages from nursery beds late in October, spaced about 3 feet apart; these thrive where the squash grew.

Irrigation: The more fertigation you can supply, the larger and more luxuriant the plants and the bigger the heads. But even small, somewhat moisture-stressed savoys make very edible heads. In terms of increased yield for water expended, it is well worth it to provide late varieties with a few gallons of fertigation about mid-June, and a bucketful in mid-July and mid-August.

Varieties: Japanese hybrid savoys make tender eating but may not withstand winter. European savoys are hardier, coarser, thicker-leaved, and harder chewing. For the first sowing I suggest a succession of Japanese varieties including Salarite or Savoy Princess for earlies; Savoy Queen, King, or Savoy Ace for midsummer; and Savonarch (TSC) for late August/early September harvests. They're all great varieties. For the second sowing I grow Savonarch (TSC) for September[-]November cutting and a very late European hybrid type like Wivoy (TSC) for winter. Small-framed January King lacks sufficient root vigor. Springtime (TSC) and FEM218 (TSC) are the only overwintered cabbages available.

Carrots

Dry-gardening carrots requires patiently waiting until the weather stabilizes before tilling and sowing. To avoid even a little bit of soil compaction, I try to sprout the seed without irrigation but always fear that hot weather will frustrate my efforts. So I till and plant too soon. And then heavy rain comes and compacts my perfectly fluffed-up soil. But the looser and finer the earth remains during their first six growing weeks, the more perfectly the roots will develop.

Sowing date: April at Elkton.

Spacing: Allocate 4 feet of width to a single row of carrot seed. When the seedlings are about 2 inches tall, thin to 1 inch apart. Then thin every other carrot when the roots are [f]3/8 to [f]1/2 inch in diameter and eat the thinnings. A few weeks later, when the carrots are about 3/4 to 1 inch in diameter, make a final thinning to 1 foot apart.

Irrigation: Not necessary. Foliar feeding every few weeks will make much larger roots. Without any help they should grow to several pounds each.

Varieties: Choosing the right variety is very important. Nantes and other delicate, juicy types lack enough fiber to hold together when they get very large. These split prematurely. I've had my best results with Danvers types. I'd also try Royal Chantenay (PEA), Fakkel Mix (TSC), Stokes "Processor" types, and Topweight (ABL). Be prepared to experiment with variety. The roots will not be quite as tender as heavily watered Nantes types but are a lot better than you'd think. Huge carrots are excellent in soups and we cheerfully grate them into salads. Something about accumulating sunshine all summer makes the roots incredibly sweet.

Cauliflower

Ordinary varieties cannot forage for moisture. Worse, moisture stress at any time during the growth cycle prevents proper formation of curds. The only important cauliflowers suitable for dry gardening are overwintered types. I call them important because they're easy to grow and they'll feed the family during April and early May, when other garden fare is very scarce.

Sowing date: To acquire enough size to survive cold weather, overwintered cauliflower must be started on a nursery bed during the difficult heat of early August. Except south of Yoncalla, delaying sowing until September makes very small seedlings that may not be hardy enough and likely won't yield much in April unless winter is very mild, encouraging unusual growth.

Spacing: In October, transplant about 2 feet apart in rows 3 to 4 feet apart.

Irrigation: If you have more water available, fertilize and till up some dusty, dry soil, wet down the row, direct-seed like broccoli (but closer together), and periodically irrigate until fall. If you only moisten a narrow band of soil close to the seedlings it won't take much water. Cauliflower grows especially well in the row that held bush peas.

Varieties: The best are the very pricy Armado series sold by Territorial.

Chard

This vegetable is basically a beet with succulent leaves and thick stalks instead of edible, sweet roots. It is just as drought tolerant as a beet, and in dry gardening, chard is sown, spaced, and grown just like a beet. But if you want voluminous leaf production during summer, you may want to fertigate it occasionally.

Varieties: The red chards are not suitable for starting early in the season; they have a strong tendency to bolt prematurely if sown during that part of the year when daylength is increasing.

Corn

Broadcast complete organic fertilizer or strong compost shallowly over the corn patch till midwinter, or as early in spring as the earth can be worked without making too many clods. Corn will germinate in pretty rough soil. High levels of nutrients in the subsoil are more important than a fine seedbed.

Sowing date: About the time frost danger ends. Being large seed, corn can be set deep, where soil moisture still exists even after conditions have warmed up. Germination without irrigation should be no problem.

Spacing: The farther south, the farther apart. Entirely without irrigation, I've had fine results spacing individual corn plants 3 feet apart in rows 3 feet apart, or 9 square feet per each plant. Were I around Puget Sound or in B.C. I'd try 2 feet apart in rows 30 inches apart. Gary Nabhan describes Papago gardeners in Arizona growing individual cornstalks 10 feet apart. Grown on wide spacings, corn tends to tiller (put up multiple stalks, each making one or two ears). For most urban and suburban gardeners, space is too valuable to allocate 9 square feet for producing one or at best three or four ears.

Irrigation: With normal sprinkler irrigation, corn may be spaced 8 inches apart in rows 30 inches apart, still yielding one or two ears per stalk.

Varieties: Were I a devoted sweetcorn eater without enough irrigation, I'd be buying a few dozen freshly picked ears from the back of a pickup truck parked on a corner during local harvest season. Were I a devoted corn grower without any irrigation, I'd be experimenting with various types of field corn instead of sweet corn. Were I a self-sufficiency buff trying earnestly to produce all my own cereal, I'd accept that the maritime Northwest is a region where survivalists will eat wheat, rye, millet, and other small grains.

Many varieties of field corn are nearly as sweet as ordinary sweet corn, but grain varieties become starchy and tough within hours of harvest. Eaten promptly, "pig" corn is every bit as tasty as Jubilee. I've had the best dry-garden results with Northstine Dent (JSS) and Garland Flint (JSS). Hookers Sweet Indian (TSC) has a weak root system.

Successfully Starting Cucurbits From Seed

With cucurbits, germination depends on high-enough soil temperature and not too much moisture. Squash are the most chill and moisture tolerant, melons the least. Here's a failure-proof and simple technique that ensures you'll plant at exactly the right time.

Cucumbers, squash, and melons are traditionally sown atop a deeply dug, fertilized spot that usually looks like a little mound after it is worked and is commonly called a hill. About two weeks before the last anticipated frost date in your area, plant five or six squash seeds about 2 inches deep in a clump in the very center of that hill. Then, a week later, plant another clump at 12 o'clock. In another week, plant another clump at 3 o'clock, and continue doing this until one of the sowings sprouts. Probably the first try won't come up, but the hill will certainly germinate several clumps of seedlings. If weather conditions turn poor, a later-to-sprout group may outgrow those that came up earlier. Thin gradually to the best single plant by the time the vines are running.

When the first squash seeds appear it is time to begin sowing cucumbers, starting a new batch each week until one emerges. When the cucumbers first germinate, it's time to try melons.

Approaching cucurbits this way ensures that you'll get the earliest possible germination while being protected against the probability that cold, damp weather will prevent germination or permanently spoil the growth prospects of the earlier seedlings.

Cucumbers

Sowing date: About May 5 to 15 at Elkton.

Spacing: Most varieties usually run five about 3 feet from the hill. Space the hills about 5 to 6 feet apart in all directions.

Irrigation: Like melons. Regular and increasing amounts of fertigation will increase the yield several hundred percent.

Varieties: I've had very good results dry-gardening Amira II (TSC), even without any fertigation at all. It is a Middle Eastern[-]style variety that makes pickler-size thin-skinned cukes that need no peeling and have terrific flavor. The burpless or Japanese sorts don't seem to adapt well to drought. Most slicers dry-garden excellently. Apple or Lemon are similar novelty heirlooms that make very extensive vines with aggressive roots and should be given a foot or two more elbow room. I'd avoid any variety touted as being for pot or patio, compact, or short-vined, because of a likely linkage between its vine structure and root system.

Eggplant

Grown without regular sprinkler irrigation, eggplant seems to get larger and yield sooner and more abundantly. I suspect this delicate and fairly drought-resistant tropical species does not like having its soil temperature lowered by frequent watering.

Sowing date: Set out transplants at the usual time, about two weeks after the tomatoes, after all frost danger has passed and after nights have stably warmed up above 50 degree F.

Spacing: Double dig and deeply fertilize the soil under each transplant. Separate plants by about 3 feet in rows about 4 feet apart.

Irrigation: Will grow and produce a few fruit without any watering, but a bucket of fertigation every three to four weeks during summer may result in the most luxurious, hugest, and heaviest-bearing eggplants you've ever grown.

Varieties: I've noticed no special varietal differences in ability to tolerate dryish soil. I've had good yields from the regionally adapted varieties Dusky Hybrid, Short Tom, and Early One.

Endive

A biennial member of the chicory family, endive quickly puts down a deep taproot and is naturally able to grow through prolonged drought. Because endive remains bitter until cold weather, it doesn't matter if it grows slowly through summer, just so long as rapid leaf production resumes in autumn.

Sowing date: On irrigated raised beds endive is sown around August 1 and heads by mid-October. The problem with dry-gardened endive is that if it is spring sown during days of increasing daylength when germination of shallow-sown small seed is a snap, it will bolt prematurely. The crucial moment seems to be about June 1. April/May sowings bolt in July/August,: after June 1, bolting won't happen until the next spring, but germination won't happen without watering. One solution is soaking the seeds overnight, rinsing them frequently until they begin to sprout, and fluid drilling them.

Spacing: The heads become huge when started in June. Sow in rows 4 feet apart and thin gradually until the rosettes are 3 inches in diameter, then thin to 18 inches apart.

Irrigation: Without a drop of moisture the plants, even as tiny seedlings, will grow steadily but slowly all summer, as long as no other crop is invading their root zone. The only time I had trouble was when the endive row was too close to an aggressive row of yellow crookneck squash. About August, the squash roots began invading the endive's territory and the endive got wilty.

A light side-dressing of complete organic fertilizer or compost in late September will grow the hugest plants imaginable.

Varieties: Curly types seem more tolerant to rain and frost during winter than broad-leaf Batavian varieties. I prefer President (TSC).

Herbs

Most perennial and biennial herbs are actually weeds and wild hillside shrubs from Mediterranean climates similar to that of Southern California. They are adapted to growing on winter rainfall and surviving seven to nine months without rainfall every summer. In our climate, merely giving them a little more elbow room than usually offered, thorough weeding, and side-dressing the herb garden with a little compost in fall is enough coddling. Annuals such as dill and cilantro are also very drought tolerant. Basil, however, needs considerable moisture.

Kale

Depending on the garden for a significant portion of my annual caloric intake has gradually refined my eating habits. Years ago I learned to like cabbage salads as much as lettuce. Since lettuce freezes out many winters (19-21 degree F), this adjustment has proved very useful. Gradually I began to appreciate kale, too, and now value it as a salad green far more than cabbage. This personal adaptation has proved very pro-survival, because even savoy cabbages do not grow as readily or yield nearly as much as kale. And kale is a tad more cold hardy than even savoy cabbage.

You may be surprised to learn that kale produces more complete protein per area occupied per time involved than any legume, including alfalfa. If it is steamed with potatoes and then mashed, the two vegetables complement and flavor each other. Our region could probably subsist quite a bit more healthfully than at present on potatoes and kale. The key to enjoying kale as a salad component is varietal choice, preparation, and using the right parts of the plant. Read on.

Sowing date: With irrigation, fast-growing kale is usually started in midsummer for use in fall and winter. But kale is absolutely biennial—started in March or April, it will not bolt until the next spring. The water-wise gardener can conveniently sow kale while cool, moist soil simplifies germination. Starting this early also produces a deep root system before the soil dries much, and a much taller, very useful central stalk on oleracea types, while early sown Siberian (Napa) varieties tend to form multiple rosettes by autumn, also useful at harvest time.

Spacing: Grow like broccoli, spaced 4 feet apart.

Irrigation: Without any water, the somewhat stunted plants will survive the summer to begin rapid growth as soon as fall rains resume. With the help of occasional fertigation they grow lushly and are enormous by September. Either way, there still will be plenty of kale during fall and winter.

Harvest: Bundles of strong-flavored, tough, large leaves are sold in supermarkets but are the worst-eating part of the plant. If chopped finely enough, big raw leaves can be masticated and tolerated by people with good teeth. However, the tiny leaves are far tenderer and much milder. The more rosettes developed on Siberian kales, the more little leaves there are to be picked. By pinching off the central growing tip in October and then gradually stripping off the large shading leaves, oleracea varieties may be encouraged to put out dozens of clusters of small, succulent leaves at each leaf notch along the central stalk. The taller the stalk grown during summer, the more of these little leaves there will be. Only home gardeners can afford the time to hand pick small leaves.

Varieties: I somewhat prefer the flavor of Red Russian to the ubiquitous green Siberian, but Red Russian is very slightly less cold hardy. Westland Winter (TSC) and Konserva (JSS) are tall European oleracea varieties. Winterbor F1 (JSS, TSC) is also excellent. The dwarf "Scotch" kales, blue or green, sold by many American seed companies are less vigorous types that don't produce nearly as many gourmet little leaves. Dwarfs in any species tend to have dwarfed root systems.

Kohlrabi (Giant)

Spring-sown market kohlrabi are usually harvested before hot weather makes them get woody. Irrigation is not required if they're given a little extra elbow room. With ordinary varieties, try thinning to 5 inches apart in rows 2 to 3 feet apart and harvest by thinning alternate plants. Given this additional growing room, they may not get woody until midsummer. On my irrigated, intensive bed I always sow some more on August 1, to have tender bulbs in autumn.

Kohlrabi was once grown as European fodder crop; slow-growing farmers, varieties grow huge like rutabagas. These field types have been crossed with table types to make "giant" table varieties that really suit dry gardening. What to do with a giant kohlrabi (or any bulb getting overblown)? Peel, grate finely, add chopped onion, dress with olive oil and black pepper, toss, and enjoy this old Eastern European mainstay.

Sowing date: Sow giant varieties during April, as late as possible while still getting a foot-tall plant before really hot weather.

Spacing: Thin to 3 feet apart in rows 4 feet apart.

Irrigation: Not absolutely necessary on deep soil, but if they get one or two thorough fertigations during summer their size may double.

Varieties: A few American seed companies, including Peace Seeds, have a giant kohlrabi of some sort or other. The ones I've tested tend to be woody, are crude, and throw many off-types, a high percentage of weak plants, and/or poorly shaped roots. By the time this book is in print, Territorial should list a unique Swiss variety called Superschmeltz, which is uniformly huge and stays tender into the next year.

Leeks

Unwatered spring-sown bulbing onions are impossible. Leek is the only allium I know of that may grow steadily but slowly through severe drought; the water-short gardener can depend on leeks for a fall/winter onion supply.

Sowing date: Start a row or several short rows about 12 inches apart on a nursery bed in March or early April at the latest. Grow thickly, irrigate during May/June, and fertilize well so the competing seedlings get leggy.

Spacing: By mid-to late June the seedlings should be slightly spindly, pencil-thick, and scallion size. With a sharp shovel, dig out the nursery row, carefully retaining 5 or 6 inches of soil below the seedlings. With a strong jet of water, blast away the soil and, while doing this, gently separate the tangled roots so that as little damage is done as possible. Make sure the roots don't dry out before transplanting. After separation, I temporarily wrap bundled seedlings in wet newspaper.

Dig out a foot-deep trench the width of an ordinary shovel and carefully place this earth next to the trench. Sprinkle in a heavy dose of organic fertilizer or strong compost, and spade that in so the soil is fluffy and fertile 2 feet down. Do not immediately refill the trench with the soil that was dug out. With a shovel handle, poke a row of 6-inch-deep holes along the bottom of the trench. If the nursery bed has grown well there should be about 4 inches of stem on each seedling before the first leaf attaches. If the weather is hot and sunny, snip off about one-third to one-half the leaf area to reduce transplanting shock. Drop one leek seedling into each hole up to the point that the first leaf attaches to the stalk, and mud it in with a cup or two of liquid fertilizer. As the leeks grow, gradually refill the trench and even hill up soil around the growing plants. This makes the better-tasting white part of the stem get as long as possible. Avoid getting soil into the center of the leek where new leaves emerge, or you'll not get them clean after harvest.

Spacing of the seedlings depends on the amount of irrigation. If absolutely none at all, set them 12 inches apart in the center of a row 4 feet wide. If unlimited water is available, give them 2 inches of separation. Or adjust spacing to the water available. The plants grow slowly through summer, but in autumn growth will accelerate, especially if they are side-dressed at this time.

Varieties: For dry gardening use the hardier, more vigorous winter leeks. Durabel (TSC) has an especially mild, sweet flavor. Other useful varieties include Giant Carentian (ABL), Alaska (STK), and Winter Giant (PEA).

Lettuce

Spring-sown lettuce will go to large sizes, remaining sweet and tender without irrigation if spaced 1 foot apart in a single row with 2 feet of elbow room on each side. Lettuce cut after mid-June usually gets bitter without regular, heavy irrigation. I reserve my well-watered raised bed for this summer salad crop. Those very short of water can start fall/winter lettuce in a shaded, irrigated nursery bed mid-August through mid-September and transplant it out after the fall rains return. Here is one situation in which accelerating growth with cloches or cold frames would be very helpful.

Water-Wise Cucurbits

The root systems of this family are far more extensive than most people realize. Usually a taproot goes down several feet and then, soil conditions permitting, thickly occupies a large area, ultimately reaching down 5 to 8 feet. Shallow feeder roots also extend laterally as far as or farther than the vines reach at their greatest extent.

Dry gardeners can do several things to assist cucurbits. First, make sure there is absolutely no competition in their root zone. This means[i]one plant per hill, with the hills separated in all directions a little farther than the greatest possible extent of the variety's ultimate growth.[i] Common garden lore states that squashes droop their leaves in midsummer heat and that this trait cannot be avoided and does no harm. But if they've grown as described above, on deep, open soil, capillarity and surface moisture reserves ensure there usually will be no midday wilting, even if there is no watering. Two plants per hill do compete and make each other wilt.

Second, double dig and fertilize the entire lateral root zone. Third, as much as possible, avoid walking where the vines will ultimately reach to avoid compaction. Finally, [i]do not transplant them.[i] This breaks the taproot and makes the plant more dependent on lateral roots seeking moisture in the top 18 inches of soil.

Melons

Sowing date: As soon as they'll germinate outdoors: at Elkton, May 15 to June 1. Thin to a single plant per hill when there are about three true leaves and the vines are beginning to run.

Spacing: Most varieties will grow a vine reaching about 8 feet in diameter. Space the hills 8 feet apart in all directions.

Irrigation: Fertigation every two to three weeks will increase the yield by two or three times and may make the melons sweeter. Release the water/fertilizer mix close to the center of the vine, where the taproot can use it.

Varieties: Adaptation to our cool climate is critical with melons; use varieties sold by our regional seed companies. Yellow Doll watermelons (TSC) are very early and seem the most productive under the most droughty conditions. I've had reasonable results from most otherwise regionally adapted cantaloupes and muskmelons. Last year a new hybrid variety, Passport (TSC), proved several weeks earlier than I'd ever experienced and was extraordinarily prolific and tasty.

Onions/Scallions

The usual spring-sown, summer-grown bulb onions and scallions only work with abundant irrigation. But the water-short, water-wise gardener can still supply the kitchen with onions or onion substitutes year-round. Leeks take care of November through early April. Overwintered bulb onions handle the rest of the year. Scallions may also be harvested during winter.

Sowing date: Started too soon, overwintered or short-day bulbing onions (and sweet scallions) will bolt and form seed instead of bulbing. Started too late they'll be too small and possibly not hardy enough to survive winter. About August 15 at Elkton I sow thickly in a well-watered and very fertile nursery bed. If you have more than one nursery row, separate them about by 12 inches. Those who miss this window of opportunity can start transplants in early October and cover with a cloche immediately after germination, to accelerate seedling growth during fall and early winter.

Start scallions in a nursery just like overwintered onions, but earlier so they're large enough for the table during winter, I sow them about mid-July.

Spacing: When seedlings are about pencil thick (December/January for overwintering bulb onions), transplant them about 4 or 5 inches apart in a single row with a couple of feet of elbow room on either side. I've found I get the best growth and largest bulbs if they follow potatoes. After the potatoes are dug in early October I immediately fertilize the area heavily and till, preparing the onion bed. Klamath Basin farmers usually grow a similar rotation: hay, potatoes, onions.

Transplant scallions in October with the fall rains, about 1 inch apart in rows at least 2 feet apart.

Irrigation: Not necessary. However, side-dressing the transplants will result in much larger bulbs or scallions. Scallions will bolt in April; the bulbers go tops-down and begin drying down as the soil naturally dries out.

Varieties: I prefer the sweet and tender Lisbon (TSC) for scallions. For overwintered bulb onions, grow very mild but poorly keeping Walla Walla Sweet (JSS), Buffalo (TSC), a better keeper, or whatever Territorial is selling at present.

Parsley

Sowing date: March. Parsley seed takes two to three weeks to germinate.

Spacing: Thin to 12 inches apart in a single row 4 feet wide. Five plants should overwhelm the average kitchen.

Irrigation: Not necessary unless yield falls off during summer and that is very unlikely. Parsley's very deep, foraging root system resembles that of its relative, the carrot.

Varieties: If you use parsley for greens, variety is not critical, though the gourmet may note slight differences in flavor or amount of leaf curl. Another type of parsley is grown for edible roots that taste much like parsnip. These should have their soil prepared as carefully as though growing carrots.

Peas

This early crop matures without irrigation. Both pole and bush varieties are planted thickly in single rows about 4 feet apart. I always overlook some pods, which go on to form mature seed. Without overhead irrigation, this seed will sprout strongly next year. Alaska (soup) peas grow the same way.

Peppers

Pepper plants on raised beds spaced the usually recommended 16 to 24 inches apart undergo intense root competition even before their leaves form a canopy. With or without unlimited irrigation, the plants will get much larger and bear more heavily with elbow room.

Sowing date: Set out transplants at the usual time. Double dig a few square feet of soil beneath each seedling, and make sure fertilizer gets incorporated all the way down to 2 feet deep.

Spacing: Three feet apart in rows 3 to 4 feet apart.

Irrigation: Without any irrigation only the most vigorous, small-fruited varieties will set anything. For an abundant harvest, fertigate every three or four weeks. For the biggest pepper plants you ever grew, fertigate every two weeks.

Varieties: The small-fruited types, both hot and sweet, have much more aggressive root systems and generally adapt better to our region's cool weather. I've had best results with Cayenne Long Slim, Gypsie, Surefire, Hot Portugal, the "cherries" both sweet and hot, Italian Sweet, and Petite Sirah.

Potatoes

Humans domesticated potatoes in the cool, arid high plateaus of the Andes where annual rainfall averages 8 to 12 inches. The species finds our dry summer quite comfortable. Potatoes produce more calories per unit of land than any other temperate crop. Irrigated potatoes yield more calories and two to three times as much watery bulk and indigestible fiber as those grown without irrigation, but the same variety dry gardened can contain about 30 percent more protein, far more mineral nutrients, and taste better.

Sowing date: I make two sowings. The first is a good-luck ritual done religiously on March 17th—St. Patrick's Day. Rain or shine, in untilled mud or finely worked and deeply fluffed earth, I still plant 10 or 12 seed potatoes of an early variety. This provides for summer.

The main sowing waits until frost is unlikely and I can dig the potato rows at least 12 inches deep with a spading fork, working in fertilizer as deeply as possible and ending up with a finely pulverized 24-inch-wide bed. At Elkton, this is usually mid-to late April. There is no rush to plant. Potato vines are not frost hardy. If frosted they'll regrow, but being burned back to the ground lowers the final yield.

Spacing: I presprout my seeds by spreading them out in daylight at room temperature for a few weeks, and then plant one whole, sprouting, medium-size potato every 18 inches down the center of the row. Barely cover the seed potato. At maturity there should be 2[f]1/2 to 3 feet of soil unoccupied with the roots of any other crop on each side of the row. As the vines emerge, gradually scrape soil up over them with a hoe. Let the vines grow about 4 inches, then pull up about 2 inches of cover. Let another 4 inches grow, then hill up another 2 inches. Continue doing this until the vines begin blooming. At that point there should be a mound of loose, fluffy soil about 12 to 16 inches high gradually filling with tubers lushly covered with blooming vines.

Irrigation: Not necessary. In fact, if large water droplets compact the loose soil you scraped up, that may interfere with maximum tuber enlargement. However, after the vines are a foot long or so, foliar feeding every week or 10 days will increase the yield.

Varieties: The water-wise gardener's main potato problem is too-early maturity, and then premature sprouting in storage. Early varieties like Yukon Gold—even popular midseason ones like Yellow Finn—don't keep well unless they're planted late enough to brown off in late September. That's no problem if they're irrigated. But planted in late April, earlier varieties will shrivel by August. Potatoes only keep well when very cool, dark, and moist—conditions almost impossible to create on the homestead during summer. The best August compromise is to leave mature potatoes undug, but soil temperatures are in the 70s during August, and by early October, when potatoes should be lifted and put into storage, they'll already be sprouting. Sprouting in October is acceptable for the remainders of my St. Pat's Day sowing that I am keeping over for seed next spring. It is not ok for my main winter storage crop. Our climate requires very late, slow-maturing varieties that can be sown early but that don't brown off until September. Late types usually yield more, too.

Most of the seed potato varieties found in garden centers are early or midseason types chosen by farmers for yield without regard to flavor or nutrition. One, Nooksack Cascadian, is a very late variety grown commercially around Bellingham, Washington. Nooksack is pretty good if you like white, all-purpose potatoes.

There are much better homegarden varieties available in Ronniger's catalog, all arranged according to maturity. For the ultimate in earlies I suggest Red Gold. For main harvests I'd try Indian Pit, Carole, German Butterball, Siberian, or a few experimental row-feet of any other late variety taking your fancy.

Rutabagas

Rutabagas have wonderfully aggressive root systems and are capable of growing continuously through long, severe drought. But where I live, the results aren't satisfactory. Here's what happens. If I start rutabagas in early April and space them about 2 to 3 feet apart in rows 4 feet apart, by October they're the size of basketballs and look pretty good; unfortunately, I harvest a hollow shell full of cabbage root maggots. Root maggots are at their peak in early June. That's why I got interested in dry-gardening giant kohlrabi.

In 1991 we had about 2 surprising inches of rain late in June, so as a test I sowed rutabagas on July 1. They germinated without more irrigation, but going into the hot summer as small plants with limited root systems and no irrigation at all they became somewhat stunted. By October 1 the tops were still small and a little gnarly; big roots had not yet formed. Then the rains came and the rutabagas began growing rapidly. By November there was a pretty nice crop of medium-size good-eating roots.

I suspect that farther north, where evaporation is not so severe and midsummer rains are slightly more common, if a little irrigation were used to start rutabagas about July 1, a decent unwatered crop might be had most years. And I am certain that if sown at the normal time (July 15) and grown with minimal irrigation but well spaced out, they'll produce acceptably.

Varieties: Stokes Altasweet (STK, TSC) has the best flavor.

Sorrel

This weed-like, drought-tolerant salad green is little known and underappreciated. In summer the leaves get tough and strong flavored; if other greens are available, sorrel will probably be unpicked. That's ok. During fall, winter, and spring, sorrel's lemony taste and delicate, tender texture balance tougher savoy cabbage and kale and turn those crude vegetables into very acceptable salads. Serious salad-eating families might want the production of 5 to 10 row-feet.

Sowing date: The first year you grow sorrel, sow mid-March to mid-April. The tiny seed must be placed shallowly, and it sprouts much more readily when the soil stays moist. Plant a single furrow centered in a row 4 feet wide.

Spacing: As the seedlings grow, thin gradually. When the leaves are about the size of ordinary spinach, individual plants should be about 6 inches apart.

Irrigation: Not necessary in summer—you won't eat it anyway. If production lags in fall, winter, or spring, side-dress the sorrel patch with a little compost or organic fertilizer.

Maintenance: Sorrel is perennial. If an unusually harsh winter freeze kills off the leaves it will probably come back from root crowns in early spring. You'll welcome it after losing the rest of your winter crops. In spring of the second and succeeding years sorrel will make seed. Seed making saps the plant's energy, and the seeds may naturalize into an unwanted weed around the garden. So, before any seed forms, cut all the leaves and seed stalks close to the ground; use the trimmings as a convenient mulch along the row. If you move the garden or want to relocate the patch, do not start sorrel again from seed. In any season dig up a few plants, divide the root masses, trim off most of the leaves to reduce transplanting shock, and transplant 1 foot apart. Occasional unique plants may be more reluctant to make seed stalks than most others. Since seed stalks produce few edible leaves and the leaves on them are very harsh flavored, making seed is an undesirable trait. So I propagate only seed-shy plants by root cuttings.

Spinach

Spring spinach is remarkably more drought tolerant than it would appear from its delicate structure and the succulence of its leaves. A bolt-resistant, long-day variety bred for summer harvest sown in late April may still yield pickable leaves in late June or even early July without any watering at all, if thinned to 12 inches apart in rows 3 feet apart.

Squash, Winter and Summer

Sowing date: Having warm-enough soil is everything. At Elkton I first attempt squash about April 15. In the Willamette, May 1 is usual. Farther north, squash may not come up until June 1. Dry gardeners should not transplant squash; the taproot must not be broken.

Spacing: The amount of room to give each plant depends on the potential of a specific variety's maximum root development. Most vining winter squash can completely occupy a 10-foot-diameter circle. Sprawly heirloom summer squash varieties can desiccate an 8-or 9-foot-diameter circle. Thin each hill to one plant, not two or more as is recommended in the average garden book. There must be no competition for water.

Irrigation: With winter storage types, an unirrigated vine may yield 15 pounds of squash after occupying a 10-foot-diameter circle for an entire growing season. However, starting about July 1, if you support that vine by supplying liquid fertilizer every two to three weeks you may harvest 60 pounds of squash from the same area. The first fertigation may only need 2 gallons. Then mid-July give 4; about August 1, 8; August 15, feed 15 gallons. After that date, solar intensity and temperatures decline, growth rate slows, and water use also decreases. On September 1 I'd add about 8 gallons and about 5 more on September 15 if it hadn't yet rained significantly. Total water: 42 gallons. Total increase in yield: 45 pounds. I'd say that's a good return on water invested.

Varieties: For winter squash, all the vining winter varieties in the C. maxima or C. pepo family seem acceptably adapted to dry gardening. These include Buttercup, Hubbard, Delicious, Sweet Meat, Delicata, Spaghetti, and Acorn. I wouldn't trust any of the newer compact bush winter varieties so popular on raised beds. Despite their reputation for drought tolerance C. mixta varieties (or cushaw squash) were believed to be strictly hot desert or humid-tropical varieties, unable to mature in our cool climate. However, Pepita (PEA) is a mixta that is early enough and seems entirely unbothered by a complete lack of irrigation. The enormous vine sets numerous good keepers with mild-tasting, light yellow flesh.

Obviously, the compact bush summer squash varieties so popular these days are not good candidates for withstanding long periods without irrigation. The old heirlooms like Black Zucchini (ABL) (not Black Beauty!) and warty Yellow Crookneck grow enormous, high-yielding plants whose extent nearly rivals that of the largest winter squash. They also grow a dense leaf cover, making the fruit a little harder to find. These are the only American heirlooms still readily available. Black Zucchini has become very raggedy; anyone growing it should be prepared to plant several vines and accept that at least one-third of them will throw rather off-type fruit. It needs the work of a skilled plant breeder. Yellow Crookneck is still a fairly "clean" variety offering good uniformity. Both have more flavor and are less watery than the modern summer squash varieties. Yellow Crookneck is especially rich, probably due to its thick, oily skin; most gardeners who once grow the old Crookneck never again grow any other kind. Another useful drought-tolerant variety is Gem, sometimes called Rolet (TSC). It grows an extensive winter-squash-like vine yielding grapefruit-size, excellent eating summer squash.

Both Yellow Crookneck and Black Zucchini begin yielding several weeks later than the modern hybrids. However, as the summer goes on they will produce quite a bit more squash than new hybrid types. I now grow five or six fully irrigated early hybrid plants like Seneca Zucchini too. As soon as my picking bucket is being filled with later-to-yield Crooknecks, I pull out the Senecas and use the now empty irrigated space for fall crops.

Tomato

There's no point in elaborate methods—trellising, pruning, or training—with dry-gardened tomato vines. Their root systems must be allowed to control all the space they can without competition, so allow the vines to sprawl as well. And pruning the leaf area of indeterminates is counterproductive: to grow hugely, the roots need food from a full complement of leaves.

Sowing date: Set out transplants at the usual time. They might also be jump started under cloches two to three weeks before the last frost, to make better use of natural soil moisture.

Spacing: Depends greatly on variety. The root system can occupy as much space as the vines will cover and then some.

Irrigation: Especially on determinate varieties, periodic fertigation will greatly increase yield and size of fruit. The old indeterminate sprawlers will produce through an entire summer without any supplemental moisture, but yield even more in response to irrigation.

Variety: With or without irrigation or anywhere in between, when growing tomatoes west of the Cascades, nothing is more important than choosing the right variety. Not only does it have to be early and able to set and ripen fruit when nights are cool, but to grow through months without watering the plant must be highly indeterminate. This makes a built-in conflict: most of the sprawly, huge, old heirloom varieties are rather late to mature. But cherry tomatoes are always far earlier than big slicers.

If I had to choose only one variety it would be the old heirloom [Large] Red Cherry. A single plant is capable of covering a 9- to 10-foot-diameter circle if fertigated from mid-July through August. The enormous yield of a single fertigated vine is overwhelming.

Red Cherry is a little acid and tart. Non-acid, indeterminate cherry types like Sweetie, Sweet 100, and Sweet Millions are also workable but not as aggressive as Red Cherry. I wouldn't depend on most bush cherry tomato varieties. But our earliest cherry variety of all, OSU's Gold Nugget, must grow a lot more root than top, for, with or without supplemental water, Gold Nugget sets heavily and ripens enormously until mid-August, when it peters out from overbearing (not from moisture stress). Gold Nugget quits just about when the later cherry or slicing tomatoes start ripening heavily.

Other well-adapted early determinates such as Oregon Spring and Santiam may disappoint you. Unless fertigated, they'll set and ripen some fruit but may become stunted in midsummer. However, a single indeterminate Fantastic Hybrid will cover a 6-to 7-foot-diameter circle, and grow and ripen tomatoes until frost with only a minimum of water. I think Stupice (ABL, TSC) and Early Cascade are also quite workable (and earlier than Fantastic in Washington).



Chapter 6

My Own Garden Plan

This chapter illustrates and explains my own dry garden. Any garden plan is a product of compromises and preferences; mine is not intended to become yours. But, all modesty aside, this plan results from 20 continuous years of serious vegetable gardening and some small degree of regional wisdom.

My wife and I are what I dub "vegetablitarians." Not vegetarians, or lacto-ovo vegetarians because we're not ideologues and eat meat on rare, usually festive occasions in other peoples' houses. But over 80 percent of our calories are from vegetable, fruit, or cereal sources and the remaining percentage is from fats or dairy foods. The purpose of my garden is to provide at least half the actual calories we eat year-round; most of the rest comes from home-baked bread made with freshly ground whole grains. I put at least one very large bowl of salad on the table every day, winter and summer. I keep us in potatoes nine months a year and produce a year's supply of onions or leeks. To break the dietary monotony of November to April, I grow as wide an assortment of winter vegetables as possible and put most produce departments to shame from June through September, when the summer vegies are "on."

The garden plan may seem unusually large, but in accordance with Solomon's First Law of Abundance, there's a great deal of intentional waste. My garden produces two to three times the amount of food needed during the year so moochers, poachers, guests, adult daughters accompanied by partners, husbands, and children, mistakes, poor yields, and failures of individual vegetables are inconsequential. Besides, gardening is fun.

My garden is laid out in 125-foot-long rows and one equally long raised bed. Each row grows only one or two types of vegetables. The central focus of my water-wise garden is its irrigation system. Two lines of low-angle sprinklers, only 4 feet apart, straddle an intensively irrigated raised bed running down the center of the garden. The sprinklers I use are Naans, a unique Israeli design that emits very little water and throws at a very low angle (available from TSC and some garden centers). Their maximum reach is about 18 feet; each sprinkler is about 12 feet from its neighbor. On the garden plan, the sprinklers are indicated by a circle surrounding an "X." Readers unfamiliar with sprinkler system design are advised to study the irrigation chapter in Growing Vegetables West of the Cascades.

On the far left side of the garden plan is a graphic representation of the uneven application of water put down by this sprinkler system. The 4-foot-wide raised bed gets lots of water, uniformly distributed. Farther away, the amount applied decreases rapidly. About half as much irrigation lands only 6 feet from the edge of the raised bed as on the bed itself. Beyond that the amount tapers off to insignificance. During summer's heat the farthest 6 feet is barely moistened on top, but no water effectively penetrates the dry surface. Crops are positioned according to their need for or ability to benefit from supplementation. For convenient description I've numbered those rows.

The Raised Bed

Crops demanding the most water are grown on the raised bed. These include a succession of lettuce plantings designed to fill the summer salad bowl, summer spinach, spring kohlrabi, my celery patch, scallions, Chinese cabbages, radishes, and various nursery beds that start overwintered crops for transplanting later. Perhaps the bed seems too large just for salad greens. But one entire meal every day consists largely of fresh, raw, high-protein green leaves; during summer, looseleaf or semiheading lettuce is our salad item of choice. And our individual salad bowls are larger than most families of six might consider adequate to serve all of them together.

If water were severely rationed I could irrigate the raised bed with hose and nozzle and dry garden the rest, but as it is, rows 1, 2, 7, and 8 do get significant but lesser amounts from the sprinklers. Most of the rows hold a single plant family needing similar fertilization and handling or, for convenience, that are sown at the same time.

Row 1

The row's center is about 3 feet from the edge of the raised bed. In March I sow my very first salad greens down half this row—mostly assorted leaf lettuce plus some spinach—and six closely spaced early Seneca Hybrid zucchini plants. The greens are all cut by mid-June; by mid-July my better-quality Yellow Crookneck squash come on, so I pull the zucchini. Then I till that entire row, refertilize, and sow half to rutabagas. The nursery bed of leek seedlings has gotten large enough to transplant at this time, too. These go into a trench dug into the other half of the row. The leeks and rutabagas could be reasonably productive located farther from the sprinklers, but no vegetables benefit more from abundant water or are more important to a self-sufficient kitchen. Rutabagas break the winter monotony of potatoes; leeks vitally improve winter salads, and leeky soups are a household staple from November through March.

Row 2: Semi-Drought Tolerant Brassicas

Row 2 gets about half the irrigation of row 1 and about one-third as much as the raised bed, and so is wider, to give the roots more room. One-third of the row grows savoy cabbage, the rest, Brussels sprouts. These brassicas are spaced 4 feet apart and by summer's end the lusty sprouts form a solid hedge 4 feet tall.

Row 3: Kale

Row 3 grows 125 feet of various kales sown in April. There's just enough overspray to keep the plants from getting gnarly. I prefer kale to not get very stunted, if only for aesthetics: on my soil, one vanity fertigation about mid-July keeps this row looking impressive all summer. Other gardens with poorer soil might need more support. This much kale may seem an enormous oversupply, but between salads and steaming greens with potatoes we manage to eat almost all the tender small leaves it grows during winter.

Row 4: Root Crops

Mostly carrots, a few beets. No irrigation, no fertigation, none needed. One hundred carrots weighing in at around 5 pounds each and 20-some beets of equal magnitude make our year's supply for salads, soups, and a little juicing.

Row 5: Dry-Gardened Salads

This row holds a few crowns of French sorrel, a few feet of parsley. Over a dozen giant kohlrabi are spring sown, but over half the row grows endive. I give this row absolutely no water. Again, when contemplating the amount of space it takes, keep in mind that this endive and kohlrabi must help fill our salad bowls from October through March.

Row 6: Peas, Overwintered Cauliflower, and All Solanaceae

Half the row grows early bush peas. Without overhead irrigation to bother them, unpicked pods form seed that sprouts excellently the next year. This half of the row is rotary tilled and fertilized again after the pea vines come out. Then it stays bare through July while capillarity somewhat recharges the soil. About August 1, I wet the row's surface down with hose and fan nozzle and sow overwintered cauliflower seed. To keep the cauliflower from stunting I must lightly hand sprinkle the row's center twice weekly through late September. Were water more restricted I could start my cauliflower seedlings in a nursery bed and transplant them here in October.

The other half is home to the Solanaceae: tomato, pepper, and eggplant. I give this row a little extra width because pea vines run, and I fertigate my Solanaceae, preferring sprawly tomato varieties that may cover an 8-foot-diameter circle. There's also a couple of extra bare feet along the outside because the neighboring grasses will deplete soil moisture along the edge of the garden.

Row 7: Water-Demanding Brassicas

Moving away from irrigation on the other side of the raised bed, I grow a succession of hybrid broccoli varieties and late fall cauliflower. The broccoli is sown several times, 20 row-feet each sowing, done about April 15, June 1, and July 15. The late cauliflower goes in about July 1. If necessary I could use much of this row for quick crops that would be harvested before I wanted to sow broccoli or cauliflower, but I don't need more room. The first sowings of broccoli are pulled out early enough to permit succession sowings of arugula or other late salad greens.

Row 8: The Trellis

Here I erect a 125-foot-long, 6-foot-tall net trellis for gourmet delicacies like pole peas and pole beans. The bean vines block almost all water that would to on beyond it and so this row gets more irrigation than it otherwise might. The peas are harvested early enough to permit a succession sowing of Purple Sprouting broccoli in mid-July. Purple Sprouting needs a bit of sprinkling to germinate in the heat of midsummer, but, being as vigorous as kale, once up, it grows adequately on the overspray from the raised bed. The beans would be overwhelmingly abundant if all were sown at one time, so I plant them in two stages about three weeks apart. Still, a great many beans go unpicked. These are allowed to form seed, are harvested before they quite dry, and crisp under cover away from the sprinklers. We get enough seed from this row for planting next year, plus all the dry beans we care to eat during winter. Dry beans are hard to digest and as we age we eat fewer and fewer of them. In previous years I've grown entire rows of dry legume seeds at the garden's edge.

Row 9: Cucurbits

This row is so wide because here are grown all the spreading cucurbits. The pole beans in row 8 tend to prevent overspray; this dryness is especially beneficial to humidity-sensitive melons, serendipitously reducing their susceptability to powdery mildew diseases. All cucurbits are fertigated every three weeks. The squash will have fallen apart by the end of September, melons are pulled out by mid-September. The area is then tilled and fertilized, making space to transplant overwintered spring cabbages, other overwintered brassicas, and winter scallions in October. These transplants are dug from nurseries on the irrigated raised bed. I could also set cold frames here and force tender salad greens all winter.

Row 10: Unirrigated Potatoes

This single long row satisfies a potato-loving household all winter. The quality of these dry-gardened tubers is so high that my wife complains if she must buy a few new potatoes from the supermarket after our supplies have become so sprouty and/or shriveled that they're not tasty any longer.



Chapter 7

The Backyard

Water-Wise Gardener

I am an unusually fortunate gardener. After seven years of struggling on one of the poorest growing sites in this region we now live on 16 acres of mostly excellent, deep soil, on the floor of a beautiful, coastal Oregon valley. My house and gardens are perched safely above the 100-year flood line, there's a big, reliable well, and if I ever want more than 20 gallons per minute in midsummer, there's the virtually unlimited Umpqua River to draw from. Much like a master skeet shooter who uses a .410 to make the sport more interesting, I have chosen to dry garden.

Few are this lucky. These days the majority of North Americans live an urban struggle. Their houses are as often perched on steep, thinly soiled hills or gooey, difficult clay as on a tiny fragment of what was once prime farmland. And never does the municipal gardener have one vital liberty I do: to choose which one-sixth of an acre in his 14-acre "back yard" he'll garden on this year.

I was a suburban backyard gardener for five years before deciding to homestead. I've frequently recalled this experience while learning to dry garden. What follows in this chapter are some strategies to guide the urban in becoming more water-wise.

Water Conservation Is the Most Important First Step

After it rains or after sprinkler irrigation, water evaporates from the surface until a desiccated earth mulch develops. Frequent light watering increases this type of loss. Where lettuce, radishes, and other shallow-rooting vegetables are growing, perhaps it is best to accept this loss or spread a thin mulch to reduce it. But most vegetables can feed deeper, so if wetting the surface can be avoided, a lot of water can be saved. Even sprinkling longer and less frequently helps accomplish that. Half the reason that drip systems are more efficient is that the surface isn't dampened and virtually all water goes deep into the earth. The other half is that they avoiding evaporation that occurs while water sprays through the air between the nozzle and the soil. Sprinkling at night or early in the morning, when there is little or no wind, prevents almost all of this type of loss.

To use drip irrigation it is not necessary to invest in pipes, emitters, filters, pressure regulators, and so forth. I've already explained how recycled plastic buckets or other large containers can be improvised into very effective drip emitters. Besides, drip tube systems are not trouble free: having the beds covered with fragile pipes makes hoeing dicey, while every emitter must be periodically checked against blockage.

When using any type of drip system it is especially important to relate the amount of water applied to the depth of the soil to the crops, root development. There's no sense adding more water than the earth can hold. Calculating the optimum amount of water to apply from a drip system requires applying substantial, practical intelligence to evaluating the following factors: soil water-holding capacity and accessible depth; how deep the root systems have developed; how broadly the water spreads out below each emitter (dispersion); rate of loss due to transpiration. All but one of these factors—dispersion—are adequately discussed elsewhere in Gardening Without Irrigation.

A drip emitter on sandy soil moistens the earth nearly straight down with little lateral dispersion; 1 foot below the surface the wet area might only be 1 foot in diameter. Conversely, when you drip moisture into a clay soil, though the surface may seem dry, 18 inches away from the emitter and just 3 inches down the earth may become saturated with water, while a few inches deeper, significant dispersion may reach out nearly 24 inches. On sandy soil, emitters on 12-inch centers are hardly close enough together, while on clay, 30-or even 36-inch centers are sufficient.

Another important bit of data to enter into your arithmetic: 1 cubic foot of water equals about 5 gallons. A 12-inch-diameter circle equals 0.75 square feet (A = Pi x Radius squared), so 1 cubic foot of water (5 gallons) dispersed from a single emitter will add roughly 16 inches of moisture to sandy soil, greatly overwatering a medium that can hold only an inch or so of available water per foot. On heavy clay, a single emitter may wet a 4-foot-diameter circle, on loams, anywhere in between, 5 gallons will cover a 4-foot-diameter circle about 1 inch deep. So on deep, clay soil, 10 or even 15 gallons per application may be in order. What is the texture of your soil, its water-holding capacity, and the dispersion of a drip into it? Probably, it is somewhere in between sand and clay.

I can't specify what is optimum in any particular situation. Each gardener must consider his own unique factors and make his own estimation. All I can do is stress again that the essence of water-wise gardening is water conservation.

Optimizing Space: Planning the Water-Wise Backyard Garden

Intensive gardening is a strategy holding that yield per square foot is the supreme goal; it succeeds by optimizing as many growth factors as possible. So a raised bed is loosened very deeply without concern for the amount of labor, while fertility and moisture are supplied virtually without limit. Intensive gardening makes sense when land is very costly and the worth of the food grown is judged against organic produce at retail—and when water and nutrients are inexpensive and/or available in unlimited amounts.

When water use is reduced, yield inevitably drops proportionately. The backyard water-wise gardener, then, must logically ask which vegetable species will give him enough food or more economic value with limited space and water. Taking maritime Northwest rainfall patterns into consideration, here's my best estimation:

Water-Wise Efficiency of Vegetable Crops

(in terms of backyard usage of space and moisture)

EFFICIENT ENOUGH

Early spring-sown crops: peas, broccoli, lettuce, radishes, savoy cabbage, kohlrabi

Overwintered crops: onions, broccoli cauliflower, cabbage, favas beans

Endive Kale

Garden sorrel

Indeterminate tomatoes

Giant kohlrabi

Parsley—leaf and root

heirloom summer squash (sprawly)

Pole beans

Herbs: marjoram, thyme, dill, cilantro, fennel, oregano

Root crops: carrots, beets, parsnips

MARGINAL

Brussels sprouts (late)

Potatoes

Determinate tomatoes

Rutabagas

Eggplant

Leeks

Leeks

Savoy cabbage (late)

Peppers, small fruited

INEFFICIENT

Beans, bush snap

Peppers, bell

Broccoli, summer

Radishes

Cauliflower

Scallions, bulb onions

Celery

Sweet corn

Lettuce

Turnips

Have fun planning your own water-wise garden!



More Reading

About the Interlibrary Loan Service

Agricultural books, especially older ones, are not usually available at local libraries. But most municipal libraries and all universities offer access to an on-line database listing the holdings of other cooperating libraries throughout the United States. Almost any book published in this century will be promptly mailed to the requesting library. Anyone who is serious about learning by reading should discover how easy and inexpensive (or free) it is to use the Interlibrary Loan Service.

Carter, Vernon Gill, and Tom, Dale. Topsoil and Civilization.

Norman, Okla.: University of Oklahoma Press, 1974.

The history of civilization's destruction of one ecosystem after another by plowing and deforestation, and its grave implications for our country's long-term survival.

Cleveland, David A., and Daniela Soleri. Food from Dryland Gardens: An Ecological, Nutritional and Social Approach to Small-Scale Household Food Production. Tucson: Center for People, Food and Environment, 1991.

World-conscious survey of low-tech food production in semiarid regions.

Faulkner, Edward H. Plowman's Folly. Norman, Okla.: University of Oklahoma Press, 1943.

This book created quite a controversy in the 1940s. Faulkner stresses the vital importance of capillarity. He explains how conventional plowing stops this moisture flow.

Foth, Henry D. Fundamentals of Soil Science. Eighth Edition. New York: John Wylie & Sons, 1990.

A thorough yet readable basic soil science text at a level comfortable for university non-science majors.

Hamaker, John. D. The Survival of Civilization. Annotated by Donald A. Weaver. Michigan/California: Hamaker-Weaver Publishers, 1982.

Hamaker contradicts our current preoccupation with global warming and makes a believable case that a new epoch of planetary glaciation is coming, caused by an increase in greenhouse gas. The book is also a guide to soil enrichment with rock powders.

Nabhan, Gary. The Desert Smells like Rain: A Naturalist in Papago Indian Country. San Francisco: North Point Press, 1962.

Describes regionally useful Native American dry-gardening techniques

Russell, Sir E. John. Soil Conditions and Plant Growth. Eighth Edition. New York: Longmans, Green & Co., 1950.

Probably the finest, most human soil science text ever written. Russell avoids unnecessary mathematics and obscure terminology. I do not recommend the recent in-print edition, revised and enlarged by a committee.

Smith, J. Russell. Tree Crops: a Permanent Agriculture. New York: Harcourt, Brace and Company, 1929.

Smith's visionary solution to upland erosion is growing unirrigated tree crops that produce cereal-like foods and nuts. Should sit on the "family bible shelf" of every permaculturalist.

Solomon, Stephen J. Growing Vegetables West of the Cascades. Seattle: Sasquatch Books, 1989.

The complete regional gardening textbook.

————————————-. Backyard Composting. Portland, Ore.: George van Patten Publishing, 1992.

Especially useful for its unique discussion of the overuse of compost and a nonideological approach to raising the most nutritious food possible.

Stout, Ruth. Gardening Without Work for the Aging, the Busy and the Indolent. Old Greenwich, Conn.: Devin-Adair, 1961.

Stout presents the original thesis of permanent mulching.

Turner, Frank Newman. Fertility, Pastures and Cover Crops Based on Nature's Own Balanced Organic Pasture Feeds. San Diego: Rateaver, 1975. Reprinted from the 1955 Faber and Faber, edition.

Organic farming using long rotations, including deeply rooted green manures developed to a high art. Turner maintained a productive organic dairy farm using subsoiling and long rotations involving tilled crops and semipermanent grass/herb mixtures.

ven der Leeden, Frits, Fred L. Troise, and David K. Todd. The Water Encyclopedia, Second Edition. Chelsea, Mich.: Lewis Publishers, 1990.

Reference data concerning every possible aspect of water.

Weaver, John E., and William E. Bruner. Root Development of Vegetable Crops. New York: McGraw-Hill, 1927.

Contains very interesting drawings showing the amazing depth and extent that vegetable roots are capable of in favorable soil.

Widtsoe, John A. Dry Farming: A System of Agriculture for Countries Under Low Rainfall. New York: The Macmillan Company, 1920.

The best single review ever made of the possibilities of dry farming and dry gardening, sagely discussing the scientific basis behind the techniques. The quality of Widtsoe's understanding proves that newer is not necessarily better.

THE END

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