Leek 'American Flag' is the predominant choice for home gardeners seeking reliable, cold-tolerant alliums with mild, sweet flavor. This heirloom variety produces thick white shanks 8–10 inches long with blue-green foliage, perfect for soups, stews, braises, and grilled preparations. A close relative of both onion and garlic, leeks offer a more delicate flavor profile that enhances rather than overpowers dishes.
Key Features
Cold-Tolerant & Overwinters Well — Thrives in cool weather and can be harvested through winter in most climates
Mild, Sweet Flavor — More delicate than onions, ideal for French onion soup, potato leek soup, quiche, and braises
Versatile in the Kitchen — Sauté, roast, grill, or use raw in salads for a subtle onion flavor
Long Harvest Window — Harvest from late summer through winter as needed
Nutrient-Rich — Excellent source of vitamins A, C, and K
Growing Tips
Leek 'American Flag' thrives in full sun with well-drained, fertile soil. Hill soil around stems as they grow to blanch the shanks and increase the edible white portion. Provide consistent moisture throughout the growing season. Harvest when shanks reach 1–2 inches in diameter. Space plants 6 inches apart in rows 12–18 inches apart.
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