When to Plant Kohlrabi in Hana, Hawaii (96713)

Location

Hana, Hawaii

ZIP Code

96713

USDA Zone

11b

Last Frost

Thursday, January 1, 2026

📅 Planting Calendar

Start Seeds Indoors Thursday, December 4, 2025

Transplant Outdoors Thursday, December 18, 2025

Pro Tip: Start Kohlrabi seeds indoors 4 weeks before your last frost date, then transplant outdoors around Thursday, December 18, 2025.

🌿 Plant Details

Scientific Name Brassica oleracea var. gongylodes

Days to Maturity 55 days

Mature Height 12-18"

Spread 8"

Type Bulb

Fruit Size Small-Medium (2-3 inch bulb)

☀️ Growing Requirements

☀️

Sun

Full Sun to Partial Shade

💧

Water

Regular (consistent moisture prevents cracking)

↔️

Spacing

6" apart

🌱

Planting Depth

0.5" deep

Seeds typically germinate in 4-7 days

Ready to Plant Kohlrabi in Hana?

Get your seeds now so they're ready by Thursday, December 4, 2025.

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🤝 Good Companions

BeetOnionCucumberHerb

⚠️ Avoid Planting Near

TomatoPepperStrawberry

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Growing Kohlrabi in Zone 11b

Kohlrabi (Brassica oleracea var. gongylodes) is a popular garden vegetable. In Hana, Hawaii, which is in USDA Hardiness Zone 11b, you should start seeds indoors around Thursday, December 4, 2025.

Your average last frost date is Thursday, January 1, 2026. Plan to transplant your Kohlrabi seedlings outdoors around Thursday, December 18, 2025, about -2 weeks after your last frost date.