When to Plant Collard Green in Zone 13A
USDA Zone
13A
Cities Covered
2
Avg Last Frost
Thursday, January 1, 2026
Plant Type
Indoor Start
📅 Planting Calendar for Zone 13A
Start Seeds Indoors Thursday, November 20, 2025
Transplant Outdoors Thursday, January 1, 2026
Pro Tip: Start Collard Green seeds indoors 6 weeks before your last frost date for best results.
🌿 Plant Details
Scientific Name Brassica oleracea var. viridis
Days to Maturity 60 days
Sun Requirements Full Sun (6+ hours)
Plant Spacing 18" apart
Cities in Zone 13A
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Growing Collard Green in USDA Zone 13A
Collard Green (Brassica oleracea var. viridis) 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 Thursday, January 1, 2026. For best results, start your Collard Green seeds indoors around Thursday, November 20, 2025, then transplant outdoors around Thursday, January 1, 2026.
Expect to harvest your Collard Green approximately 60 days after planting.