Quick planting window
| Start indoors | March to April |
|---|---|
| Transplant | June to July |
| Sow seeds | Usually not recommended for this crop in a short-season garden |
| Estimated harvest | September to October |
| Risk | Medium risk |
Month calendar
Scan the year by month to see seed starting, sowing, transplanting, and harvest timing.
Pepper is frost sensitive. Wait until the conservative transplant or sowing window for Colorado.
Next: ZIP code personalization
This is a state-level planning window based on typical frost timing and crop rules. Use local Extension guidance or a ZIP code frost-date tool before planting.
Planning notes
Days to maturity
85
Covered states
Colorado
Frost window
May to June / September to October
Front Range, mountain, and western slope gardens can have very different timing.
Pepper growing notes
The calendar window is only the first step. These growing details affect survival, plant vigor, and harvest quality.
Sun
Full sun.
Soil
Warm, fertile soil with steady moisture.
Spacing
18-24 inches.
Container
Works well in 3-5+ gallon containers.
Watering
Water consistently; drought stress can reduce fruit set.
Common mistake
Setting plants outside before soil and nights warm up.
Beginner tip
Start early indoors and avoid overwatering seedlings.
Month window table
| Crop | Spring transplant / sow | Spring harvest | Fall transplant / sow | Fall harvest |
|---|---|---|---|---|
| Pepper | June to July | September to October | June to July | September to October |
Sources and limits
This page uses Colorado state-level frost windows, USDA zone ranges, and crop rules for planning. It does not replace local Extension or county-level guidance.
FAQ
When should I start pepper seeds indoors in Colorado?
For spring, the indoor seed-starting window is about March to April. Move later if your local frost date is later than the state average.
When should I transplant pepper in Colorado?
For spring, the transplant window is about June to July. Harden seedlings off before planting outside.
Can I sow pepper outdoors in Colorado?
Outdoor sowing is usually riskier for pepper in short-season gardens.
When can I harvest pepper in Colorado?
Spring planting estimates a harvest around September to October; fall planting estimates about September to October. Variety and weather can shift this by several weeks.
Is pepper risky in Colorado?
Pepper is frost sensitive. Wait until the conservative transplant or sowing window for Colorado. For fall: Pepper is frost sensitive. Fall planting in Colorado needs enough warm days before first frost.
Do local differences inside Colorado matter?
Front Range, mountain, and western slope gardens can have very different timing. Treat this as a state-level starter window and confirm with a local Extension or frost-date tool before planting.
What growing details matter most for pepper?
Full sun. Warm, fertile soil with steady moisture. Common mistake: Setting plants outside before soil and nights warm up.
Is this ZIP-code accurate?
No. This page uses state-level windows; ZIP-code frost dates, USDA zone matching, and reminder calendars are planned for the next phase.