When should I plant peppers in ZIP 80903?

In ZIP 80903, the main peppers target is around May 29, based on the representative Colorado Springs frost station and USDA zone 6a.

When should I start peppers seeds indoors in 80903?

Start peppers seeds indoors in ZIP 80903 around Mar 20, about 56 days before the May 15 last-frost estimate.

Is this a guaranteed planting date?

No. GrowZone uses frost-date estimates, hardiness zones, and crop timing rules for planning. Local microclimates and current weather can shift the right date.

ZIP 80903 planting calendar

When to plant peppers in Colorado Springs, CO - Zone 6a

Q: When is the first frost in Colorado Springs?

Colorado Springs (ZIP 80903) has an average first fall frost around Oct 1, leaving about 139 frost-free days.

In ZIP 80903, plant peppers around May 29; this uses the Colorado Springs frost station, USDA zone 6a, and peppers timing rules.

Your Colorado Springs calendar has a 139-day estimated frost-free season. This estimate uses the representative Colorado Springs frost station, USDA zone 6a, and peppers timing rules.

Source: colorado-springs-muni frost station, USDA zone 6a, last updated 2026-06-28. Verify locally before planting high-value crops because microclimates, current weather, and yard exposure can move the safe date.

USDA zone 6a Colorado Springs frost station Colorado State University Extension Updated 2026-06-28

Read the method

Answer first

When to start peppers seeds indoors in Colorado Springs

In ZIP 80903, start peppers seeds indoors around Mar 20, about 56 days before the May 15 last-frost estimate.

Start peppers seeds indoors in Colorado Springs around Mar 20, about 56 days before the May 15 last-frost estimate.

Seed starting schedule

Peppers dates for Colorado Springs, CO

Step	Date	How to use it
Start Indoors	March 20, 2026	Start seeds under lights or in a bright indoor seed-starting space.
Transplant Outdoors	May 29, 2026	Move hardened-off seedlings outside after the frost-risk window.

Last frost

When is the last frost in Colorado Springs?

Colorado Springs (ZIP 80903) has an average last spring frost around May 15.

First frost

When is the first frost in Colorado Springs?

The average first fall frost is around Oct 1, giving about 139 frost-free days.

Season map

Peppers windows by month

JanFebMarAprMayJunJulAugSepOctNovDec

Start indoors

Mar 20

Transplant

May 29

Harvest

Aug 22

Frost watch

Jul 8

Reminder workflow

Every date has a next action

Start peppers indoorsMar 20

Last frost windowMay 15

Transplant peppersMay 29

Last peppers sowing targetJul 8

First peppers harvest windowAug 22

Signal	Value	Why it matters
Last frost estimate	May 15, 2026	Warm-season transplant risk starts falling after this window.
First frost estimate	October 1, 2026	Fall planting counts backward from this date.
Season length	139 days	Longer seasons can support succession crops.
Spacing	18 in	Airflow and root space affect yield.
Soil temperature	65 F+	Seeds and transplants stall in cold soil.

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Local data

Why this date changes by ZIP

Colorado Springs frost history and USDA zone 6a shift the safe planting window. GrowZone uses a local representative station instead of one national rule.

Colorado State University Extension is the kind of local source to verify against when a crop is expensive, weather is unusual, or your yard has a cold pocket.

Crop note

Peppers timing notes

Peppers stall in cold soil, so wait for warm nights. Peppers prefers full sun, 18 in spacing, and soil near 65 F+.

For fall, count backward from Oct 1. A conservative last sowing target is around Jul 8.