(Allium ampeloprasum) American Flag Leek originated in the late 1800’s and has a tall, broad stem that resembles a flagpole. This variety has a sweet, mild onion flavor that is perfect braised or used in soups and stews.
7-9” inch stems are pearly-white with tall blue-green leaves. Leeks are very cold hardy and can be left in the garden into fall for an extended harvest or overwintered in milder climates.
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Start indoors 8-10 weeks before average last frost. Sow outside 2-4 weeks before average last frost for late summer harvest, late spring for fall harvest, and in late summer to overwinter for harvest the following spring.
Leeks tolerate cold temperatures as low as 25°F, and can be harvested even after a few light frosts.
Leeks like long sunny days for extra large growth.
Leeks are easy to grow and have few pests or diseases.
Hilling leeks will encourage longer shanks.
Harvest leeks when tops are 8" - 12" tall, shanks are about 1" in diameter, and the base is not yet bulbous. The soil can be loosened with a garden fork, then pull leeks by hand.