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When to Plant Fennel in Jefferson City, Tennessee (37760)

Location

Jefferson City, Tennessee

ZIP Code

37760

USDA Zone

7b

Last Frost

Sunday, April 5, 2026

📅 Planting Calendar

Start Seeds Indoors Sunday, March 8, 2026
Transplant Outdoors Sunday, March 22, 2026

Pro Tip: Start Fennel seeds indoors 4 weeks before your last frost date for best results.

🌿 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

🤝 Good Companions

Dill

Other Plants for Jefferson City

Growing Fennel in Zone 7b

Fennel (Foeniculum vulgare) is a popular garden vegetable. In Jefferson City, Tennessee, which is in USDA Hardiness Zone 7b, you should start seeds indoors around Sunday, March 8, 2026.

Your average last frost date is Sunday, April 5, 2026. Plan to transplant your Fennel seedlings outdoors around Sunday, March 22, 2026, about -2 weeks after your last frost date.