When to Plant Leek in Bancroft, Wisconsin (54921)

Location

Bancroft, Wisconsin

ZIP Code

54921

USDA Zone

Last Frost

Tuesday, May 5, 2026

📅 Planting Calendar

Start Seeds Indoors Tuesday, February 24, 2026

Transplant Outdoors Tuesday, May 19, 2026

Pro Tip: Start Leek seeds indoors 10 weeks before your last frost date, then transplant outdoors around Tuesday, May 19, 2026.

🌿 Plant Details

Scientific Name Allium ampeloprasum

Days to Maturity 120 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 1-7 days

Ready to Plant Leek in Bancroft?

Get your seeds now so they're ready by Tuesday, February 24, 2026.

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🤝 Good Companions

CeleryAppleCarrot

⚠️ Avoid Planting Near

Swiss Chard

Other Plants for Bancroft

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Growing Leek in Zone 4b

Leek (Allium ampeloprasum) is a popular garden vegetable. In Bancroft, Wisconsin, which is in USDA Hardiness Zone 4b, you should start seeds indoors around Tuesday, February 24, 2026.

Your average last frost date is Tuesday, May 5, 2026. Plan to transplant your Leek seedlings outdoors around Tuesday, May 19, 2026, about 2 weeks after your last frost date.