Zone-Specific Guide
Grow Kohlrabi in Zone 11a
Your complete guide to growing kohlrabi in USDA Hardiness Zone 11a — planting windows, care tips, and harvest timing.
Winter
🌡️ Zone 11a
🏖️ Shade Cloth
Days to Harvest
45–60
Spacing
6–10"
Method
Both
Season
Winter
When to Plant Kohlrabi in Zone 11a
Start Indoors
Sept – Oct
Transplant Outdoors
Oct – Dec
Direct Sow
Oct – Feb
How to Grow Kohlrabi in Zone 11a
📋 Key Timing Note
Narrower window than zone 10. Only viable in the coolest months. Heat kills brassicas fast.
Start seeds indoors during Sept – Oct. Transplant seedlings outdoors between Oct – Dec. Direct sow seeds between Oct – Feb. Space plants 6–10" apart. Expect to harvest in approximately 45–60 days.
🏖️ Shade Cloth Recommended
In Zone 11a, use 30-50% shade cloth during the hottest months to protect kohlrabi from heat stress.
Common Pests in Zone 11a
Watch for these pests when growing kohlrabi in your area.
Frequently Asked Questions
When should I plant Kohlrabi in Zone 11a?
Start seeds indoors Sept – Oct. Transplant outdoors Oct – Dec.
How far apart should I plant Kohlrabi in Zone 11a?
Space kohlrabi plants 6–10" apart in Zone 11a. This gives them adequate room for airflow and root development.
What pests affect Kohlrabi in Zone 11a?
Common pests for kohlrabi in Zone 11a include cabbage worms, aphids. Use companion planting and row covers as first-line defense.
How long until Kohlrabi is ready to harvest in Zone 11a?
In Zone 11a, expect kohlrabi to be ready in approximately 45–60 days from planting. Narrower window than zone 10. Only viable in the coolest months. Heat kills brassicas fast.