Allium ampeloprasum

Leek

Packed with vitamins K and A, this hearty member of the onion-family is superb in soups and stews, grilled, or sliced into slivers and added to omelets. Get creative with this versatile veggie!

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The Growing Guide

Soil Temp for Germ 50–85°F
Seed Depth ¼–½"
Days to Emergence 6–16
Soil Temp for Transplant 45°F
Plant Spacing 4–5"
Row Spacing 12–18"
Fertilizer Needs Medium
Minimum Germination 70%
Seeds per Gram ≈ 350
Seed Life 1 year

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More About The Seeds & Plants

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Allium ampeloprasum

Days to maturity are calculated from transplant date.

Culture
• Leeks are a frost-hardy cool season crop requiring a long growing period
• Best growth is achieved with fertile, well-drained soil with a pH of 6.0-7.0
• Plant in a trench 5 inches deep and wide, work in 1/2 cup of TSC's Complete fertilizer per 5 row feet
• Blanch to increase the length of white stem by gradually filling in the trench as the leeks grow

Direct Sowing
• Thin to the strongest plant when 4-5 inches

Transplanting
• Sow up to 10-12 seeds in a 4-6 inch pot
• If tops reach over 5 inches before transplant, cut to 3 inches
• When planting out carefully separate the seedlings and place in a shallow trench
• Fill trench around seedlings and water in well

Harvest & Storage
• Harvest anytime the leeks are 1/2 inch in diameter or larger
• Store at 36°F and 95% relative humidity

Team-Endorsed Essentials

Our Staff's Best Leeks

Comanche Leeks earn our “Employee Favorite” badge for their standout performance: They develop long, clean white shanks, dark blue-green upright foliage, peel easily, and hold well in the field making them both gardener and kitchen-friendly.

COMANCHE

Vegetable | leek | autumn

From $25.55

100 days. Comanche is our first choice especially for Pacific Northwest gardens. It's an adaptable and high-yielding leek for both summer and fall harvest, producing clean, upright plants with long, thick white shanks and dark blue-green leaves. This one is easy to peel and clean, so it’s a pleasure to work with in the kitchen.