When to Plant Butternut Squash 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 22, 2026

Transplant Outdoors Wednesday, June 3, 2026

Pro Tip: Start Butternut Squash seeds indoors 4 weeks before your last frost date, then transplant outdoors around Wednesday, June 3, 2026.

🌿 Plant Details

Scientific Name Cucurbita moschata

Days to Maturity 100 days

Mature Height 12-18"

Spread 72"

Type Vine

Fruit Size Large (2-5 lbs)

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Regular (1 inch/week)

↔️

Spacing

60" apart

🌱

Planting Depth

1" deep

Seeds typically germinate in 5-10 days

Ready to Plant Butternut Squash in Biwabik?

Get your seeds now so they're ready by Wednesday, April 22, 2026.

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🤝 Good Companions

CornBeanMarigoldNasturtium

⚠️ Avoid Planting Near

Potato

Other Plants for Biwabik

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Growing Butternut Squash in Zone 3b

Butternut Squash (Cucurbita moschata) is a popular garden vegetable. In Biwabik, Minnesota, which is in USDA Hardiness Zone 3b, you should start seeds indoors around Wednesday, April 22, 2026.

Your average last frost date is Wednesday, May 20, 2026. Plan to transplant your Butternut Squash seedlings outdoors around Wednesday, June 3, 2026, about 2 weeks after your last frost date.