When to Plant Kohlrabi in Durham, North Carolina (27708)

Location

Durham, North Carolina

ZIP Code

27708

USDA Zone

Last Frost

Friday, March 20, 2026

📅 Planting Calendar

Start Seeds Indoors Friday, February 20, 2026

Transplant Outdoors Friday, March 6, 2026

Pro Tip: Start Kohlrabi seeds indoors 4 weeks before your last frost date, then transplant outdoors around Friday, March 6, 2026.

🌿 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 Durham?

Get your seeds now so they're ready by Friday, February 20, 2026.

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🤝 Good Companions

BeetOnionCucumberHerb

⚠️ Avoid Planting Near

TomatoPepperStrawberry

Other Plants for Durham

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Growing Kohlrabi in Zone 8a

Kohlrabi (Brassica oleracea var. gongylodes) is a popular garden vegetable. In Durham, North Carolina, which is in USDA Hardiness Zone 8a, you should start seeds indoors around Friday, February 20, 2026.

Your average last frost date is Friday, March 20, 2026. Plan to transplant your Kohlrabi seedlings outdoors around Friday, March 6, 2026, about -2 weeks after your last frost date.