Lettuce is an annual, leafy vegetable that is a member of the daisy family. It is known for its high water content and is often used as the base of salads. Lettuce can be described by its:
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AppearanceLettuce leaves can be smooth or curly and are usually green or red in color. The shape of the leaves is characteristic of the type of lettuce.
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GrowthLettuce is a fast-growing plant that produces broad leaves in a rosette around a short stem in early spring. As the days get longer in late spring, the stem elongates and the leaves are pushed upward.
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Growing conditionsLettuce grows best in full sun to partial shade and in moist, well-drained soil with an optimal pH of 6 to 6.7. It prefers cool weather and can bolt and flower in high temperatures or dry soil.
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VarietiesThere are over 100 varieties of lettuce, including romaine, iceberg, butterhead, leaf, and summercrisp. Each variety has its own characteristics and is used for different purposes.
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NutritionLettuce is a good source of vitamins A and K, but the nutritional quality can vary by variety.
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