Question 1

When should I plant peppers in ZIP 85201?

Accepted Answer

In ZIP 85201, the main peppers target is around Feb 19, based on the representative Phoenix frost station and USDA zone 10a.

Question 2

When should I start peppers seeds indoors in 85201?

Accepted Answer

Start peppers seeds indoors in ZIP 85201 around Dec 11, about 56 days before the Feb 5 last-frost estimate.

Question 3

When is the last frost in Mesa?

Accepted Answer

Mesa (ZIP 85201) has an average last spring frost around Feb 5, based on the representative Phoenix frost station.

Question 4

When is the first frost in Mesa?

Accepted Answer

Mesa (ZIP 85201) has an average first fall frost around Dec 15, leaving about 313 frost-free days.

Question 5

Is this a guaranteed planting date?

Accepted Answer

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

Step	Date	How to use it
Start Indoors	December 11, 2025	Start seeds under lights or in a bright indoor seed-starting space.
Transplant Outdoors	February 19, 2026	Move hardened-off seedlings outside after the frost-risk window.

Start peppers seeds indoors around Dec 11

Peppers dates for Mesa, AZ