When to Plant Kohlrabi in Allakaket, Alaska (99720)

Location

Allakaket, Alaska

ZIP Code

99720

USDA Zone

Last Frost

Monday, June 15, 2026

📅 Planting Calendar

Start Seeds Indoors Monday, May 18, 2026

Transplant Outdoors Monday, June 1, 2026

Pro Tip: Start Kohlrabi seeds indoors 4 weeks before your last frost date, then transplant outdoors around Monday, June 1, 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 Allakaket?

Get your seeds now so they're ready by Monday, May 18, 2026.

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🤝 Good Companions

BeetOnionCucumberHerb

⚠️ Avoid Planting Near

TomatoPepperStrawberry

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Growing Kohlrabi in Zone 1a

Kohlrabi (Brassica oleracea var. gongylodes) is a popular garden vegetable. In Allakaket, Alaska, which is in USDA Hardiness Zone 1a, you should start seeds indoors around Monday, May 18, 2026.

Your average last frost date is Monday, June 15, 2026. Plan to transplant your Kohlrabi seedlings outdoors around Monday, June 1, 2026, about -2 weeks after your last frost date.