When to Plant Mustard in East Grand Forks, Minnesota (56721)
Location
East Grand Forks, Minnesota
ZIP Code
56721
USDA Zone
4a
Last Frost
Friday, May 15, 2026
📅 Planting Calendar
Direct Sow Outdoors Friday, April 3, 2026
Pro Tip: Mustard can be directly sown outdoors. Plant 6 weeks before your last frost date.
🌿 Plant Details
Scientific Name Brassica juncea
Days to Maturity 56 days
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
Seeds typically germinate in 1-7 days
🤝 Good Companions
CabbageCauliflowerRadishBrussel SproutTurnip
Other Plants for East Grand Forks
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Growing Mustard in Zone 4a
Mustard (Brassica juncea) is a popular garden vegetable. In East Grand Forks, Minnesota, which is in USDA Hardiness Zone 4a, you should direct sow seeds around Friday, April 3, 2026.
Your average last frost date is Friday, May 15, 2026. Mustard grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.