When to Plant Napa Cabbage 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 15, 2026
Pro Tip: Start Napa Cabbage seeds indoors 6 weeks before your last frost date for best results.
🌿 Plant Details
Scientific Name Brassica rapa subsp. pekinensis
Days to Maturity 70 days
Sun Requirements Full Sun (6-8 hours)
Plant Spacing 18" apart
Cities in Zone 13A
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Growing Napa Cabbage in USDA Zone 13A
Napa Cabbage (Brassica rapa subsp. pekinensis) 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 Napa Cabbage seeds indoors around Thursday, November 20, 2025, then transplant outdoors around Thursday, January 15, 2026.
Expect to harvest your Napa Cabbage approximately 70 days after planting.