Large American Flag Leek

Type: Heirloom, open-pollinated
Packet size: 20+ seeds

Allium porrum. Large American Flag Leek is a classic heirloom leek variety prized for its long, thick white stalks and mild, sweet onion-like flavor. This dependable, cold-hardy vegetable is an excellent choice for home gardens, raised beds, and fall vegetable gardens.

Large American Flag Leeks develop sturdy white stalks topped with broad green leaves. Their mild flavor makes them excellent for soups, stews, potato dishes, roasting, sautéing, and other recipes. Leeks tolerate cool weather well and can remain in the garden into fall for an extended harvest.

🌱 Growing Information

How to Grow Large American Flag Leek from Seed

Planting Depth: ¼ inch
Seed Spacing: 4–6 inches
Row Spacing: 18–24 inches
Germination Time: 10–14 days
Days to Harvest: 100–120 days
Sun Requirements: Full Sun

Planting Tips:
Start Large American Flag Leek seeds indoors 8–10 weeks before your last expected spring frost, or direct sow outdoors once the soil can be worked. Keep the soil consistently moist during germination.

Transplant seedlings into fertile, well-drained soil in a sunny location. As the leeks grow, gradually mound loose soil around the lower stems to blanch them and encourage the development of long, tender white stalks. Avoid getting soil between the leaves.

Provide consistent moisture throughout the growing season. Harvest leeks when the stalks have reached a desirable size, typically around 1 inch in diameter. Their cold tolerance makes Large American Flag an excellent leek for late-season and fall harvests.

🌱 Container Friendly: Leeks can also be grown in containers and small-space gardens. Choose a large container at least 10–12 inches deep with good drainage.