When to Plant Fennel in Fox River Grove, Illinois (60021)

Location

Fox River Grove, Illinois

ZIP Code

60021

USDA Zone

Last Frost

Saturday, April 25, 2026

📅 Planting Calendar

Start Seeds Indoors Saturday, March 28, 2026

Transplant Outdoors Saturday, April 11, 2026

Pro Tip: Start Fennel seeds indoors 4 weeks before your last frost date, then transplant outdoors around Saturday, April 11, 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 Fox River Grove?

Get your seeds now so they're ready by Saturday, March 28, 2026.

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🤝 Good Companions

Dill

Other Plants for Fox River Grove

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Growing Fennel in Zone 5b

Fennel (Foeniculum vulgare) is a popular garden vegetable. In Fox River Grove, Illinois, which is in USDA Hardiness Zone 5b, you should start seeds indoors around Saturday, March 28, 2026.

Your average last frost date is Saturday, April 25, 2026. Plan to transplant your Fennel seedlings outdoors around Saturday, April 11, 2026, about -2 weeks after your last frost date.