When to Plant Brussels Sprout in Honolulu, Hawaii (96821)

Location

Honolulu, Hawaii

ZIP Code

96821

USDA Zone

12b

Last Frost

Thursday, January 1, 2026

📅 Planting Calendar

Start Seeds Indoors Thursday, October 9, 2025

Transplant Outdoors Thursday, January 1, 2026

Pro Tip: Start Brussels Sprout seeds indoors 12 weeks before your last frost date, then transplant outdoors around Thursday, January 1, 2026.

🌿 Plant Details

Scientific Name Brassica oleracea var. gemmifera

Days to Maturity 84 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 1-7 days

Ready to Plant Brussels Sprout in Honolulu?

Get your seeds now so they're ready by Thursday, October 9, 2025.

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Growing Brussels Sprout in Zone 12b

Brussels Sprout (Brassica oleracea var. gemmifera) is a popular garden vegetable. In Honolulu, Hawaii, which is in USDA Hardiness Zone 12b, you should start seeds indoors around Thursday, October 9, 2025.

Your average last frost date is Thursday, January 1, 2026. Plan to transplant your Brussels Sprout seedlings outdoors around Thursday, January 1, 2026, about 0 weeks after your last frost date.