When to Plant Kohlrabi in Haiku, Hawaii (96708)
Location
Haiku, Hawaii
ZIP Code
96708
USDA Zone
12a
Last Frost
Friday, January 1, 2027
📅 Planting Calendar
Start Seeds Indoors Friday, December 4, 2026
Transplant Outdoors Friday, December 18, 2026
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
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
Seeds typically germinate in 7-14 days
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Growing Kohlrabi in Zone 12a
Kohlrabi (Brassica oleracea var. gongylodes) is a popular garden vegetable. In Haiku, Hawaii, which is in USDA Hardiness Zone 12a, you should start seeds indoors around Friday, December 4, 2026.
Your average last frost date is Friday, January 1, 2027. Plan to transplant your Kohlrabi seedlings outdoors around Friday, December 18, 2026, about -2 weeks after your last frost date.