When to Plant Sweet Potato 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, November 20, 2026
Pro Tip: Sweet Potato can be directly sown outdoors. Plant 6 weeks before your last frost date.
🌿 Plant Details
Scientific Name Ipomoea batatas
Days to Maturity 100 days
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
Seeds typically germinate in 7-14 days
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Growing Sweet Potato in Zone 12b
Sweet Potato (Ipomoea batatas) is a popular garden vegetable. In Honolulu, Hawaii, which is in USDA Hardiness Zone 12b, you should direct sow seeds around Friday, November 20, 2026.
Your average last frost date is Friday, January 1, 2027. Sweet Potato grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.