When to Plant Rutabaga in Honolulu, Hawaii (96821)
Location
Honolulu, Hawaii
ZIP Code
96821
USDA Zone
12b
Last Frost
Friday, January 1, 2027
📅 Planting Calendar
Direct Sow Outdoors Friday, December 4, 2026
Pro Tip: Rutabaga can be directly sown outdoors. Plant 4 weeks before your last frost date.
🌿 Plant Details
Scientific Name Brassica napus
Days to Maturity 90 days
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
Seeds typically germinate in 7-14 days
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Growing Rutabaga in Zone 12b
Rutabaga (Brassica napus) is a popular garden vegetable. In Honolulu, Hawaii, which is in USDA Hardiness Zone 12b, you should direct sow seeds around Friday, December 4, 2026.
Your average last frost date is Friday, January 1, 2027. Rutabaga grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.