When to Plant Swiss Chard 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: Swiss Chard can be directly sown outdoors. Plant 6 weeks before your last frost date.
🌿 Plant Details
Scientific Name Beta vulgaris
Days to Maturity 280 days
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
Seeds typically germinate in 1-7 days
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Growing Swiss Chard in Zone 12b
Swiss Chard (Beta vulgaris ) 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. Swiss Chard grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.