When to Plant Fennel in Union Pier, Michigan (49129)

Location

Union Pier, Michigan

ZIP Code

49129

USDA Zone

Last Frost

Wednesday, April 15, 2026

📅 Planting Calendar

Start Seeds Indoors Wednesday, March 18, 2026

Transplant Outdoors Wednesday, April 1, 2026

Pro Tip: Start Fennel seeds indoors 4 weeks before your last frost date, then transplant outdoors around Wednesday, April 1, 2026.

🌿 Plant Details

Scientific Name Foeniculum vulgare

Days to Maturity 80 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 7-14 days

Ready to Plant Fennel in Union Pier?

Get your seeds now so they're ready by Wednesday, March 18, 2026.

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🤝 Good Companions

Dill

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Growing Fennel in Zone 6b

Fennel (Foeniculum vulgare) is a popular garden vegetable. In Union Pier, Michigan, which is in USDA Hardiness Zone 6b, you should start seeds indoors around Wednesday, March 18, 2026.

Your average last frost date is Wednesday, April 15, 2026. Plan to transplant your Fennel seedlings outdoors around Wednesday, April 1, 2026, about -2 weeks after your last frost date.