Heirloom
American Flag Leek is a striking heirloom variety named for its tall, broad stalks that stand like miniature flagpoles in the garden. This leek reaches 16 to 20 inches at maturity and produces exceptionally heavy, wide stems that develop a subtle sweetness as temperatures drop through fall and winter. With a 120-day harvest window, it's a patient gardener's reward, a substantial, flavorful leek that brings both visual presence and culinary substance to the kitchen.
Full Sun
—
?-?
20in H x ?in W
Perennial
Moderate
Hover over chart points for details
What sets American Flag apart is its architectural presence in the garden and on the plate. The variety produces noticeably thick, blanched stalks with green-blue foliage that's as ornamental as it is productive. Originally called simply the Flag Leek for its resemblance to a sturdy flag pole, this leek's patriotic name came later, but the character was always there, robust, reliable, and built to last through the cold months when its flavor intensifies and sweetens.
American Flag Leek's heavy, wide stalks make it ideal for slicing and adding to soups, braises, and stocks where its substantial texture and developing sweetness truly shine. The blanched white portions are prized for their tender texture, while the green tops can be reserved for broths and vegetable scraps. Its cold-season vigor makes it particularly valuable for extending the harvest into autumn and early winter, when fresh homegrown vegetables become scarcer.
Sow seeds indoors under protection in late winter, timing your start so transplants are ready to move outdoors after the soil becomes workable in spring.
Transplant seedlings outdoors any time after soil can be worked in spring. Set transplants at the same depth they were growing indoors, or slightly deeper to encourage blanching of the white stem portions.
American Flag Leek reaches harvest readiness at around 120 days. Harvest when the white blanched bottoms have thickened substantially and the overall plant height approaches 16 to 20 inches. You can begin harvesting individual outer leaves once the plant is established, or wait to pull the entire leek. The variety sweetens noticeably after frost, so timing your harvest for late fall or early winter captures the full flavor development this variety is known for.
Enter your ZIP code to see a personalized growing calendar for this plant.
“The American Flag Leek originated with a simpler name that spoke to its most distinctive visual feature: the tall, broad stem that resembles a miniature but sturdy flag pole. Somewhere along its journey through American seed catalogs and home gardens, the name picked up its patriotic flourish, becoming "American Flag" rather than simply "Flag Leek." This variety has been passed through generations of gardeners drawn to its combination of impressive stature and cold-season performance, embodying the kind of reliable heirloom vegetable that defined American seed saving traditions.”