Gardening Without Irrigation Part 7

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.

Cuc.u.mbers, 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 antic.i.p.ated 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 cuc.u.mbers, starting a new batch each week until one emerges. When the cuc.u.mbers 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.

Cuc.u.mbers

_Sowing date:_ About May 5 to 15 at Elkton.

_s.p.a.cing:_ Most varieties usually run five about 3 feet from the hill. s.p.a.ce 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 j.a.panese 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 pa.s.sed and after nights have stably warmed up above 50 degree F.

_s.p.a.cing:_ 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.

_s.p.a.cing:_ 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.

_s.p.a.cing: _Grow like broccoli, s.p.a.ced 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 cl.u.s.ters 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.

_s.p.a.cing:_ 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.

_s.p.a.cing:_ 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.

s.p.a.cing 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 s.p.a.cing 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).