When to Plant Blackberry in Honolulu, Hawaii (96813)
Location
Honolulu, Hawaii
ZIP Code
96813
USDA Zone
12b
Last Frost
Friday, January 1, 2027
📅 Planting Calendar
Direct Sow Outdoors Friday, December 4, 2026
Pro Tip: Blackberry can be directly sown outdoors. Plant 4 weeks before your last frost date.
🌿 Plant Details
Scientific Name Rubus fruticosus
Days to Maturity 365 days
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
Seeds typically germinate in 7-14 days
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Growing Blackberry in Zone 12b
Blackberry (Rubus fruticosus) 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. Blackberry grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.