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When to plant peppers in Zone 4a

In Zone 4a, start indoors around April 2 and transplant around May 21 – June 4.

Your peppers timeline — Zone 4a

Start indoorsApril 2
TransplantMay 21 – June 4
Zone 4a last frost~05/14
Zone 4a first frost~09/27
Start indoors; set out 2 weeks after the last frost. [src]Cited: University of New Hampshire Cooperative Extension — “Growing Vegetables: When to Plant Your Vegetable Garden”

Dates computed from Zone 4a's median NOAA frost normals and the cited rule. Your town may differ by a week or two — check your exact ZIP.

What you'll need

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Last verified 2026-07-16. Frost: NOAA NCEI 1991–2020. Zone: USDA 2023. Rule: University of New Hampshire Cooperative Extension — “Growing Vegetables: When to Plant Your Vegetable Garden”; UGA Extension (days to maturity).

Peppers in other zones

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