When to Plant Fennel in California
State
California
Cities Covered
1234
USDA Zones
10a, 10b, 11a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
Plant Type
Indoor Start
📅 Planting Calendar for California
Based on Los Angeles (Zone 10b). Dates may vary by city.
Note: California spans multiple zones (10a, 10b, 11a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b). Select your city below for more precise dates.
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Growing Fennel in California
Fennel (Foeniculum vulgare) is a popular garden vegetable in California. The state spans USDA Hardiness Zones 10a, 10b, 11a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b, so planting dates can vary significantly depending on your location.
For most of California, you should start Fennel seeds indoors around Friday, December 18, 2026, then transplant outdoors around Friday, January 1, 2027.
For the most accurate planting dates, enter your ZIP code on our homepage or select your city from the list above.