Type
heirloom, fall leek
Leek variety
American Flag Leek
A long-grown standard with thick white shanks and blue-green leaves. It is adaptable and one of the most familiar leek varieties in home-garden catalogs.
Days to maturity
120-150
Best for
main-season harvests, classic kitchen use
About American Flag
American Flag is a traditional leek with sturdy blue-green foliage and medium to large white shanks. It is a dependable old garden type, more valued for versatility and flavor than for extreme earliness or deep winter standing.
Growing American Flag Leek
Start early so plants have time to build thick stems, and set transplants deeply or hill soil around them to blanch longer white shafts. Harvest from pencil-thick onward, but do not leave it standing into severe winter cold like the hardiest overwintering strains.
Full growing guide
For planting dates, care, and harvest that apply to all leeks, see the complete guide.
How to grow LeeksOther leeks varieties
Variety characteristics are general guidance for US home gardens; performance varies by climate, soil, and season. Seed and plant availability differs by supplier. Page updated Aug 4, 2026.