A leek is an onion-like plant used in cooking and recognized by its distinct odor. Leeks are relative of onions, chives and garlic.
PLANTING AND CULTURELeeks like rich, deep loam, but are not too particular about soil requirements. They respond readily to heavy applications of mature compost. Well-rotted manure may be substituted, if necessary, but avoid the use of raw manure. Leeks will tolerate a moderately acidic soil but must be rich in nitrogen.
Plant seed thickly, about 1/2 inch deep. When the seedlings are 8 inches high, they should be carefully dug up. Remove half of the tops and replant the seedling six inches apart in trenches 6 inches deep and 3 to 4 inches wide. A heavy supply of sifted compost humus should be incorporated with the soil in the bottom of the trenches. As the plants grow, the sides of the trenches should be broken down to blanch the edible stems. During the early stages of their growth, leeks require and abundance of plant food. They require lots of moisture.
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