When to Plant Serrano Pepper in Colfax, North Dakota (58018)
Location
Colfax, North Dakota
ZIP Code
58018
USDA Zone
4a
Last Frost
Friday, May 15, 2026
📅 Planting Calendar
Start Seeds Indoors Friday, March 6, 2026
Transplant Outdoors Friday, May 29, 2026
Pro Tip: Start Serrano Pepper seeds indoors 10 weeks before your last frost date for best results.
🌿 Plant Details
Scientific Name Capsicum annuum
Days to Maturity 80 days
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
Seeds typically germinate in 7-14 days
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Growing Serrano Pepper in Zone 4a
Serrano Pepper (Capsicum annuum) is a popular garden vegetable. In Colfax, North Dakota, which is in USDA Hardiness Zone 4a, you should start seeds indoors around Friday, March 6, 2026.
Your average last frost date is Friday, May 15, 2026. Plan to transplant your Serrano Pepper seedlings outdoors around Friday, May 29, 2026, about 2 weeks after your last frost date.