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When to Plant Bok Choy in Callaway, Minnesota (56521)

Location

Callaway, Minnesota

ZIP Code

56521

USDA Zone

4a

Last Frost

Friday, May 15, 2026

📅 Planting Calendar

Direct Sow Outdoors Friday, April 17, 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 4a

Bok Choy (Brassica rapa subsp. chinensis) is a popular garden vegetable. In Callaway, Minnesota, which is in USDA Hardiness Zone 4a, you should direct sow seeds around Friday, April 17, 2026.

Your average last frost date is Friday, May 15, 2026. Bok Choy grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.