🌱 MyLocalPlanting

When to Plant Potato in Biwabik, Minnesota (55708)

Location

Biwabik, Minnesota

ZIP Code

55708

USDA Zone

3b

Last Frost

Wednesday, May 20, 2026

📅 Planting Calendar

Start Seeds Indoors Wednesday, March 25, 2026
Transplant Outdoors Wednesday, June 3, 2026

Pro Tip: Start Potato seeds indoors 8 weeks before your last frost date for best results.

🌿 Plant Details

Scientific Name Solanum tuberosum
Days to Maturity 90 days
Mature Height 18-24"
Spread 12"
Type Tuber
Fruit Size Variable

☀️ Growing Requirements

☀️

Sun

Full Sun (6+ hours)

💧

Water

Regular (1-2 inches/week)

↔️

Spacing

12" apart

🌱

Planting Depth

4" deep

Seeds typically germinate in 8-21 days

🤝 Good Companions

BeanCornBrassicasHorseradishMarigold

⚠️ Avoid Planting Near

TomatoCucumberSquashSunflower

Other Plants for Biwabik

Growing Potato in Zone 3b

Potato (Solanum tuberosum) is a popular garden vegetable. In Biwabik, Minnesota, which is in USDA Hardiness Zone 3b, you should start seeds indoors around Wednesday, March 25, 2026.

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