Release in Fall of 2026

Bring a robust, gourmet staple to your vegetable garden with our Large American Flag Leek. A prized heirloom favorite since the 1800s, this exceptionally hardy variety produces massive, thick, sweet stalks that blanch to a beautiful, creamy white before transitioning into fan-shaped, blue-green foliage. Celebrated for its mild, sweet, onion-like flavor, it is the ultimate ingredient for rich cold-weather soups, stews, and savory roasted dishes.

Whether you are a home gardener looking to extend your autumn harvest or a market grower supplying premium local produce, Large American Flag grows reliably and beautifully. It stands tall in the garden, handling frost with ease and providing a steady, heavy yield of crisp, gourmet stalks well into the winter months.

The B&KM Farms Promise

Like all of our varieties, these seeds are 100% heirloom, non-GMO, and completely untreated. Every single packet is grown, harvested, and carefully packaged entirely by hand right here in the USA by our family team. We skip the massive, impersonal factory assembly lines so that we can ensure only the freshest, highest-quality seeds make it to your front door.

Variants

• 1 Gram Packet (~350 Seeds): Perfect for backyard raised beds, small home garden plots, or an introductory kitchen garden trial.

• 1 oz Pouch (~10,000 Seeds): Great for large homestead plots, long garden rows, or intensive multi-season succession planting.

• 1 lb Bulk Sack (~160,000 Seeds): Ideal for commercial market growers, community farm projects, seed-saving libraries, and large-scale agricultural production.

Quick Growing Facts

• Plant Type: Hardy Biennial Vegetable (Grown as a cold-hardy annual)

• Mature Height: 12 to 18 inches (Stalks grow 2 to 3 inches thick)

• Plant Spread: 6 to 8 inches

• Days to Harvest: 100 to 120 days

• Sunlight Requirements: Full Sun (Crucial for developing thick, robust stalks)

• Hardiness Zones: 3 through 9 (Incredibly frost-tolerant; handles freezing winter temperatures beautifully)

Planting & Care Guide

• When to Plant: Start seeds indoors 8–12 weeks before your region's last expected spring frost. Leeks have a long growing season and benefit greatly from an early indoor start. Alternatively, direct-sow outdoors in late summer for a bountiful winter or early spring harvest.

• Seeding Depth: 1/4 inch deep. Sow seeds in a rich, finely sifted seed-starting mix and cover lightly. Keep the soil consistently moist until they sprout (typically takes 7–14 days).

• Spacing: When seedlings reach about 6 inches tall (and look like tiny green onions), transplant them outdoors spaced 4 to 6 inches apart in rows that are 12 to 18 inches apart.

• Watering: Maintain consistent, even moisture throughout the entire growing season. Leeks have shallow root systems and thrive with regular watering—about 1 inch of water per week is ideal to keep the stalks tender and crisp.

• Pro Gardening Tip: The secret to those prized, long white gourmet stems is a process called blanching! Plant your seedlings inside deep, 6-inch furrows or holes. As the leeks grow taller and reach toward the sun, gradually hill the surrounding soil up around the base of the stalks. Blocking the sunlight from hitting the lower stems prevents them from turning green, keeping them incredibly tender, mild, and snowy white.

Why You'll Love It

• Superior Frost & Winter Hardiness: Unlike many garden vegetables that wither at the first sign of autumn, Large American Flag Leeks actually become sweeter and more flavorful after being touched by a hard frost, allowing you to harvest fresh food straight from frozen soil.

• Exceptional Storage Life: Once harvested, these rugged leeks hold up beautifully in a cool cellar or refrigerator for weeks, giving you a steady supply of fresh, homegrown ingredients deep into the winter.

• Gourmet Culinary Versatility: Sweeter and far more subtle than standard onions or scallions, they melt beautifully into butter for gourmet bases, potato-leek soups, stir-fries, and elegant side dishes.

• Perfect for Intensive Growing: Because of their upright, vertical growth habit, they take up very little horizontal real estate, making them an excellent choice for maximizing yields in tight raised beds or companion planting layouts.