When to Plant Cauliflower in Biwabik, Minnesota (55708)

Location

Biwabik, Minnesota

ZIP Code

55708

USDA Zone

Last Frost

Wednesday, May 20, 2026

📅 Planting Calendar

Start Seeds Indoors Wednesday, April 8, 2026

Transplant Outdoors Wednesday, May 20, 2026

Pro Tip: Start Cauliflower seeds indoors 6 weeks before your last frost date, then transplant outdoors around Wednesday, May 20, 2026.

🌿 Plant Details

Scientific Name Brassica oleracea var. botrytis

Days to Maturity 75 days

Mature Height 18-24"

Spread 24"

Type Head

Fruit Size Medium (6-8 inch head)

☀️ Growing Requirements

☀️

Sun

Full Sun (6 hours)

💧

Water

Regular (1-1.5 inches/week)

↔️

Spacing

18" apart

🌱

Planting Depth

0.5" deep

Seeds typically germinate in 4-10 days

Ready to Plant Cauliflower in Biwabik?

Get your seeds now so they're ready by Wednesday, April 8, 2026.

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🤝 Good Companions

BeetCeleryBeanOnion

⚠️ Avoid Planting Near

StrawberryTomato

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Growing Cauliflower in Zone 3b

Cauliflower (Brassica oleracea var. botrytis) is a popular garden vegetable. In Biwabik, Minnesota, which is in USDA Hardiness Zone 3b, you should start seeds indoors around Wednesday, April 8, 2026.

Your average last frost date is Wednesday, May 20, 2026. Plan to transplant your Cauliflower seedlings outdoors around Wednesday, May 20, 2026, about 0 weeks after your last frost date.