Vegetable
American Flag
A tier
American Flag (sometimes London Flag–related naming) is a long-shanked, blue-green leek long sold in North American catalogues—reliable blanching length for home gardens and mild flavour for general cooking. It is less specialised than modern hybrid autumn or winter slots but covers most kitchen needs. Shanks whiten when earthed or deeply planted. Sauté, soup, and quiche all suit it. Grow for tall white portions. A historic open-pollinated workhorse rather than a single-season gourmet hybrid.
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History
American Flag-type leeks entered US seed commerce for home and market gardens.
American Flag became a default leek name in US catalogues.
Hybrids competed but American Flag remained on heirloom-leaning lists.
American Flag continued as a recognised long-shank garden leek.