A mulch around the plant also helps conserve soil moisture and reduce weed growth. Use drip irrigation if possible to conserve water. Water requirements depend on soil type and temperatures. Water lettuce regularly supplying 1-2 inches per week. Plants can be left in the garden after light frosts. The maturity date should be about 1-2 weeks before the first fall frost. For fall lettuce, select early maturing cultivars and plant 50-75 days before the anticipated maturity date. High summer temperatures reduce growth, decrease quality, and cause bitter or off flavors to develop. Seeded lettuce may be planted 2-3 weeks earlier. Transplants should be planted near the last frost-free date for the growing area. Temperatures down to 32 degrees F do not seriously damage young plants. Lettuce grows best when temperatures do not exceed 75 degrees F. Dense plantings will reduce weed pressure.
#1 WEEK LETTUCE SEEDLINGS FULL#
Seeded or transplanted lettuce should be spaced 8-12 inches betweenplants in the row with 12-18 inches between rows in a location that will receive full sunlight. Generally 5-6 weeks are required to grow transplants to this size. Transplants should have 4-6 mature leaves and a welldeveloped root system before planting out. Plants removed at thinning can be transplanted to adjacent areas if some roots are maintained. Seeds should be planted ¼-½ inch deep and thinned when plants have 3-4 true leaves. Temperatures above 80 degrees F reduce seed germination. Lettuce can be sown after soils reach 40 degrees F though seeds germinate best at 55-65 degrees F and will emerge in 7-10 days. Lettuce can be grown from seed or transplants. If you fertilize with compost, apply no more than 1 inch of well-composted organic matter per 100 square feet of garden area. If fertilizer applications are warranted, work the fertilizer into the top 6 inches of soil. Soil Preparationīefore planting, determine fertilizer needs with a soil test and then follow the recommendations given with the test report. Most soils in Utah are well suited for lettuce production. Lettuce prefers fertile, well-drained soils rich in organic matter for best growth. Red Sails, Oakleaf, Salad Bowl, Black Seeded Simpson Lentissima, Cimmaron Red Romaine, Italian Blonde Romaine Summertime, Salinas, Great Lakes, Iceberg
There are many good varieties for sale in local gardening outlets and through seed catalogs. Varieties vary greatly in maturity, flavor, texture, and tolerance to garden conditions. Planting a range of different types makes salads more interesting. Lettuce comes in a variety of head types, leaf colors and textures. Harvest lettuce when the leaves or heads reach full size. Control insect and diseases throughout the year. Avoid water or fertilizer stress during growth. Lettuce tastes best when plants grow rapidly and mature before the heat of summer. Final spacing for head lettuce should be 8-12 inches apart in the row with rows 12-18 inches apart. Plant seeds ¼-½ inch deep, 2-3 weeks before the last frost. Lettuce is a cool-season vegetable that prefers sunny locations and fertile, well-drained soil.
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