When to Plant Napa Cabbage 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, June 3, 2026

Pro Tip: Start Napa Cabbage seeds indoors 6 weeks before your last frost date, then transplant outdoors around Wednesday, June 3, 2026.

🌿 Plant Details

Scientific Name Brassica rapa subsp. pekinensis

Days to Maturity 70 days

Mature Height 12-18"

Spread 12"

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Regular (1-2 inches/week)

↔️

Spacing

18" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 4-7 days

Ready to Plant Napa Cabbage in Biwabik?

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

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🤝 Good Companions

BeetOnionCeleryCucumber

⚠️ Avoid Planting Near

StrawberryTomatoPepper

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Growing Napa Cabbage in Zone 3b

Napa Cabbage (Brassica rapa subsp. pekinensis) 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 Napa Cabbage seedlings outdoors around Wednesday, June 3, 2026, about 2 weeks after your last frost date.