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When to Plant Kohlrabi in Zone 11B

USDA Zone

11B

Cities Covered

14

Avg Last Frost

Thursday, January 1, 2026

Plant Type

Indoor Start

📅 Planting Calendar for Zone 11B

Start Seeds Indoors Thursday, December 4, 2025
Transplant Outdoors Thursday, December 18, 2025

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

🌿 Plant Details

Scientific Name Brassica oleracea var. gongylodes
Days to Maturity 55 days
Sun Requirements Full Sun to Partial Shade
Plant Spacing 6" apart

Cities in Zone 11B

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Growing Kohlrabi in USDA Zone 11B

Kohlrabi (Brassica oleracea var. gongylodes) grows well in USDA Hardiness Zone 11B. This zone includes cities like Long Key, Islamorada, Key West and 11 more.

The average last frost date for Zone 11B is around Thursday, January 1, 2026. For best results, start your Kohlrabi seeds indoors around Thursday, December 4, 2025, then transplant outdoors around Thursday, December 18, 2025.

Expect to harvest your Kohlrabi approximately 55 days after planting.