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When to Plant Bok Choy in Bird Island, Minnesota (55310)

Location

Bird Island, Minnesota

ZIP Code

55310

USDA Zone

4b

Last Frost

Tuesday, May 5, 2026

📅 Planting Calendar

Direct Sow Outdoors Tuesday, April 7, 2026

Pro Tip: Bok Choy can be directly sown outdoors. Plant 4 weeks before your last frost date.

🌿 Plant Details

Scientific Name Brassica rapa subsp. chinensis
Days to Maturity 45 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 7-14 days

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Growing Bok Choy in Zone 4b

Bok Choy (Brassica rapa subsp. chinensis) is a popular garden vegetable. In Bird Island, Minnesota, which is in USDA Hardiness Zone 4b, you should direct sow seeds around Tuesday, April 7, 2026.

Your average last frost date is Tuesday, May 5, 2026. Bok Choy grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.