When to Plant Artichoke in Colby, Wisconsin (54421)
Location
Colby, Wisconsin
ZIP Code
54421
USDA Zone
4b
Last Frost
Tuesday, May 5, 2026
📅 Planting Calendar
Start Seeds Indoors Tuesday, March 10, 2026
Transplant Outdoors Tuesday, May 19, 2026
Pro Tip: Start Artichoke seeds indoors 8 weeks before your last frost date for best results.
🌿 Plant Details
Scientific Name Cynara scolymus
Days to Maturity 56 days
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
Seeds typically germinate in 8-21 days
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Growing Artichoke in Zone 4b
Artichoke (Cynara scolymus) is a popular garden vegetable. In Colby, Wisconsin, which is in USDA Hardiness Zone 4b, you should start seeds indoors around Tuesday, March 10, 2026.
Your average last frost date is Tuesday, May 5, 2026. Plan to transplant your Artichoke seedlings outdoors around Tuesday, May 19, 2026, about 2 weeks after your last frost date.