How to Start Peppers From Seed
Peppers grow slowly at first and are most reliably raised indoors in much of the United States. They need sustained warmth to germinate and to grow well after transplanting.
Start indoors or direct sow?
Start peppers indoors and transplant them after the weather has become warm. Their long season makes direct sowing impractical in most home gardens, and established seedlings transplant well when handled gently.
When to start Peppers seeds
Sow indoors about 8 to 10 weeks before your average last spring frost. Transplant 2 to 3 weeks after the last frost, once soil and nighttime temperatures are consistently warm.
How to sow the seeds
Sow seeds 1/4 inch deep in sterile seed-starting mix in cells or small pots with drainage. A heat mat is helpful, and seedlings can be moved into 3 to 4 inch pots if roots fill their first cells.
Germination
Pepper seeds commonly take 7 to 21 days to germinate. Maintain evenly moist mix at about 80 to 85°F for the most dependable emergence.
Seedling care
Give seedlings 14 to 16 hours of bright light daily and rotate trays if light comes from a window. Water carefully at soil level, provide airflow, and avoid keeping the mix saturated to prevent damping off.
Transplanting & hardening off
Harden plants off over 7 to 10 days, increasing sun and wind exposure gradually. Transplant into full sun after the soil has warmed, keeping the root ball at the same depth it grew in the pot.
Tips
Label varieties at sowing because pepper seedlings look very similar. Do not rush peppers outdoors, as cold soil can stall their growth for weeks.
General seed-starting guidance for US home gardens; timing depends on your local frost dates and variety. Page updated Aug 4, 2026.