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When to Plant Cauliflower in Zone 13A

USDA Zone

13A

Cities Covered

2

Avg Last Frost

Friday, January 1, 2027

Plant Type

Indoor Start

📅 Planting Calendar for Zone 13A

Start Seeds Indoors Friday, November 20, 2026
Transplant Outdoors Friday, January 1, 2027

Pro Tip: Start Cauliflower seeds indoors 6 weeks before your last frost date for best results.

🌿 Plant Details

Scientific Name Brassica oleracea var. botrytis
Days to Maturity 75 days
Sun Requirements Full Sun (6 hours)
Plant Spacing 18" apart

🤝 Companion Plants for Cauliflower

Good Companions

BeetCeleryBeanOnion

Avoid Planting Near

StrawberryTomato
See the full companion planting guide for Cauliflower →

Cities in Zone 13A

Other Plants for Zone 13A

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Growing Cauliflower in USDA Zone 13A

Cauliflower (Brassica oleracea var. botrytis) grows well in USDA Hardiness Zone 13A. This zone includes cities like Keauhou, M C B H Kaneohe Bay.

The average last frost date for Zone 13A is around Friday, January 1, 2027. For best results, start your Cauliflower seeds indoors around Friday, November 20, 2026, then transplant outdoors around Friday, January 1, 2027.

Expect to harvest your Cauliflower approximately 75 days after planting.