When to Plant Peppers in Colorado
Colorado spans USDA hardiness 4a to 7a (zones 4a to 7a on this page). Plant peppers by your local frost date, not the calendar — pick your zone below for exact start-indoors, transplant, and harvest dates.
Jump to: Zone 4a · Zone 4b · Zone 5a · Zone 5b · Zone 6a · Zone 6b · Zone 7a
Peppers planting calendar for Colorado, Zone 4a
Average last spring frost
May 15
Average first fall frost
September 20
Start seeds indoors
Mar 20
Transplant outdoors
May 29
Projected first harvest
Aug 12
Most peppers mature in about 60 to 120 days depending on the variety. Full zone 4 guide (both 4a and 4b) →
Peppers planting calendar for Colorado, Zone 4b
Average last spring frost
May 10
Average first fall frost
September 25
Start seeds indoors
Mar 15
Transplant outdoors
May 24
Projected first harvest
Aug 7
Most peppers mature in about 60 to 120 days depending on the variety. Full zone 4 guide (both 4a and 4b) →
Peppers planting calendar for Colorado, Zone 5a
Average last spring frost
May 5
Average first fall frost
October 1
Start seeds indoors
Mar 10
Transplant outdoors
May 19
Projected first harvest
Aug 2
Most peppers mature in about 60 to 120 days depending on the variety. Full zone 5 guide (both 5a and 5b) →
Peppers planting calendar for Colorado, Zone 5b
Average last spring frost
April 30
Average first fall frost
October 5
Start seeds indoors
Mar 5
Transplant outdoors
May 14
Projected first harvest
Jul 28
Most peppers mature in about 60 to 120 days depending on the variety. Full zone 5 guide (both 5a and 5b) →
Peppers planting calendar for Colorado, Zone 6a
Average last spring frost
April 25
Average first fall frost
October 10
Start seeds indoors
Feb 28
Transplant outdoors
May 9
Projected first harvest
Jul 23
Most peppers mature in about 60 to 120 days depending on the variety. Full zone 6 guide (both 6a and 6b) →
Peppers planting calendar for Colorado, Zone 6b
Average last spring frost
April 20
Average first fall frost
October 15
Start seeds indoors
Feb 23
Transplant outdoors
May 4
Projected first harvest
Jul 18
Most peppers mature in about 60 to 120 days depending on the variety. Full zone 6 guide (both 6a and 6b) →
Peppers planting calendar for Colorado, Zone 7a
Average last spring frost
April 15
Average first fall frost
October 20
Start seeds indoors
Feb 18
Transplant outdoors
Apr 29
Projected first harvest
Jul 13
Most peppers mature in about 60 to 120 days depending on the variety. Full zone 7 guide (both 7a and 7b) →
Not sure which half-zone you're in? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
25 varieties of peppers in the HomeSown library. Tap any for its full grow guide.
Common problems with peppers
What to watch for, with identification and treatment for each
🌱 Grow peppers with a calendar built for your exact yard
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