After harvesting, use immediately or store in a cool location such as your fridge, in a plastic bag, for up to a week. Slug damage results in ragged, chewed leaves and weak plants. Previously, she owned her own business, selling handmade items online, wholesale and at crafts fairs. Iceberg lettuce doesn't set deep roots, so it requires proper irrigation to keep the root zone moist. Entire plants can be harvested in mid-development while the leaves are still plump and tender, but before a stem has started to form. Transplant Outdoors: Between 2 weeks before and 2 weeks after the last frost date. Too much warmth can cause the lettuce to bolt prematurely, which typically occurs with iceberg when temperatures are above 75 F. A location that provides afternoon shade provides some protection of warmer temperatures in late spring. Keeping the lettuce bed well weeded further minimizes pest populations near the lettuce. Many varieties of lettuce can be harvested as microgreens, baby greens, leaves, or entire plant. Keep soil moist to keep plants growing continuously. Many varieties of looseleaf lettuce can be harvested numerous times during a single growing season after being cut approximately 1" above the ground. Growing Lettuce From Seed Direct seeding is the easiest way to grow lettuce. When completely dry, shake the flower stems in the bag. Some other general guidelines when collecting the entire plant: Leaf lettuce can be cut as soon as it is large enough to use, usually in 50 to 60 days from planting. Irrigation and Nutrients Iceberg lettuce doesn't set deep roots, so it requires proper irrigation to keep the root zone moist. How to Grow Iceberg Lettuce. Store the leaves in the refrigerator for 5-10 days. Frequent watering will help the iceberg lettuce plants grow quickly. Start Indoors: 25 to 46 days before the last frost date. Harden seedlings by reducing water and temperature for 3 days before transplanting. Crisphead: Just like iceberg lettuce.This is the most difficult variety of lettuce to grow in Florida. You can start head lettuces like iceberg indoors up to six weeks before you transplant to get an earlier start on the season. When cutting the plants, remove the entire head at the base. Time of sowing depends on when the crop is wanted: For a summer/autumn crop: sow outdoors from late March to late July. Use row covers to protect very early plantings from cold, to protect young plants from insects, and (supported by hoops) to shade crops when warm weather arrives. Using a clean sharp knife, cut at the base to harvest. Growing Guide Choose a head lettuce variety for indoor planting. Iceberg lettuce. Lettuce grows best in cool weather. Bagged lettuce, spinach and chard salads are a good example of crispy combinations with a high water content. To encourage tender and tasty growth, make sure location is rich in organic compost matter. The lettuce is part of the crisphead family—varieties whose leaves grow to overlap one another to form a dense, round head that looks very different from loose-leaf greens like arugula, kale, and spinach. The lettuce is ready to harvest when it's firm and full grown, or about 6 inches (15.24 cm) in diameter. Often, you can begin to pick the first leaves in as few as 4-6 weeks. I grow the cultivar Iceberg which does not get extra large. If planting indoors, start by planting the seeds in a shallow tray and covering with a bit of potting soil. Sow seed 1/8 inch deep, 1 inch apart in rows 12 to 18 inches apart. A well-drained bed that receives about six hours of sunlight provides the optimum growing location. Lettuce Varieties: Bibb, Black Seeded Simpson, Buttercrunch, Butterhead, Cos, Crisphead, Green Leaf, Head, Iceberg, Leaf, Looseleaf, Mesclun Greens, Oakleaf, Parris Island, Red Leaf, Red Salad Bowl, Romaine. Lettuce grows best in full sun, though excessive heat can cause plants to bolt to seed, or leaves to wilt. Head lettuces take longer to mature. What kind of soil does Lettuce like? Learning to save seeds is easy and fun with these books. Slugs and snails feed on the heads under cover of dark. Make succession plantings every week or two, and grow several varieties with different maturity dates for a continuous supply. Heat makes the plant bolt, which makes their leaves taste bitter. Keep lettuce plants well watered during dry periods to promote rapid, uninterrupted growth. Place it in a colander and rinse then drip dry. Rub the seed heads between your hands to release more seeds. Iceberg lettuce is easy to grow, making it a popular crop for novice gardeners and green thumbs alike. It’s funny that big strapping pumpkins and acorn squash are fragile little babiesand something as delicate as lettuce is considered hardy. Fertilizing can be helpful to promote faster growth, especially a fish emulsion type that is not high in nitrogen that can cause greens to become bitter. Depending on how cool and moist the weather is, the lettuce may require watering every five to 10 days. You can find this variety in the following Seed Packs: Click the packs below to see some of our other wonderful products. Diseases rarely affect lettuce plants, but keeping the leaves dry does prevent mildew and fungal infections. To transplant the lettuce, be sure to choose fertile, moist soil that drains well. You could also grow lettuces in growbags or containers – follow the sowing timings and spacings as below. University of California: Growing Salad Greens. Hardened plants should survive 20 F. Space crisphead transplants 12 inches apart in rows 18 inches apart. It needs about 80 to 90 days to reach maturity and will usually mature just as the warm weather sets in. lettuce-greenway-iceberg-2 (1) lettuce-greenway-iceberg-3 (1) An easy-to-grow, hardy variety. Top iceberg lettuce tips To make lettuce last longer wrap your lettuce in a paper towel and place it in a Ziplock bag. Seeds need light to germinate; sow at a very shallow depth by covering with a thin layer of growing medium. Best Lettuce Variety to Grow Indoors. Lettuce prefers sun or partial shade, but should be sheltered from excessive wind and summer heat to avoid wilting. It grows as a fall, winter or spring garden vegetable in U.S. Department of Agriculture hardiness zones 8 through 10. See all of our brand-new seed pack offerings in our store. For extra cleaning use reverse screening, with a smaller mesh that retains the seed but lets small pieces or chaff and plume through. Romaine and Butterhead lettuce can be harvested in about 60 to 70 days from planting. Lettuce has a shallow root system. ; Iceberg: Dense headed lettuce that resembles a cabbage.It offers crispy, fresh, mild, … Moisture, stress, and high temperatures, particularly at night, encourage bolting. Iceberg and romaine are two common types of head lettuce. That means you need to plant your crop when it’s still quite chillyin the spring and/or in the fall, after the heat of summer has dissipated. Winnowing is difficult because seeds and chaff are about the same size and weight. If cleaning large amounts use a mask and goggles or clean outdoors. When plants have two or three true leaves, thin to 12-inch spacings for crisphead varieties, 6 … If you start the seeds inside, the plants can benefit from an earlier planting date, and therefore a longer growing season. How to plant lettuce Amend prior to planting if needed. 'Mature leaves' can be harvested from all type of lettuce except for iceberg any time in the growing cycle, until a central stem begins to form. Mulch to retain moisture and suppress weeds (unless slugs are a problem). The smaller varieties of lettuce grow superbly well in containers, either companioned with herbs and other small vegetables, or on their own using a ‘combo’ type lettuce seed or seedling mix. The outer leaves may be somewhat loose, but the inner head should feel tight and firm. When plants have two or three true leaves, thin to 12-inch spacings for crisphead varieties, 6 to 10 inches for other types. GROWING NOTES. These plants form dense, compact heads of crisp leaves. Growing Iceberg lettuce is similar to growing most any other kind of lettuce. Either spread the seed very thinly along a row and cover lightly with soil, or sprinkle it over a bed and rake it in. Heirloom seeds are the gardeners choice for seed-saving from year-to-year. Rubbing separates the plumes and chaff from the seeds. As the season progresses, plant more bolt-resistant varieties. Add toothpicks to the bottom of the lettuce core. 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