When to Plant Kohlrabi in Isabella, Minnesota (55607)
Location
Isabella, Minnesota
ZIP Code
55607
USDA Zone
3b
Last Frost
Wednesday, May 20, 2026
📅 Planting Calendar
Start Seeds Indoors Wednesday, April 22, 2026
Transplant Outdoors Wednesday, May 6, 2026
Pro Tip: Start Kohlrabi seeds indoors 4 weeks before your last frost date for best results.
🌿 Plant Details
Scientific Name Brassica oleracea var. gongylodes
Days to Maturity 55 days
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
Seeds typically germinate in 7-14 days
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Growing Kohlrabi in Zone 3b
Kohlrabi (Brassica oleracea var. gongylodes) is a popular garden vegetable. In Isabella, Minnesota, which is in USDA Hardiness Zone 3b, you should start seeds indoors around Wednesday, April 22, 2026.
Your average last frost date is Wednesday, May 20, 2026. Plan to transplant your Kohlrabi seedlings outdoors around Wednesday, May 6, 2026, about -2 weeks after your last frost date.