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When to Plant Turnip 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: Turnip can be directly sown outdoors. Plant 6 weeks before your last frost date.

🌿 Plant Details

Scientific Name Brassica rapa
Days to Maturity 91 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 1-7 days

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Growing Turnip in Zone 12b

Turnip (Brassica rapa) 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. Turnip grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.