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Planting calendar for ZIP 03582 (Groveton, NH)

When to plant vegetables in Groveton, NH (USDA hardiness zone 4b). Typical last spring frost around May 19, 2026 12 days year to year), first fall frost around Sep 29, 202610 days).

Playing it safe? Spring frost holds off until about Jun 3, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Groveton, NH planting calendar for dates typical of the whole city.

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Month by month in Groveton, NH

February

March

April

May

June

July

August

Understand your frost dates

Frost dates for ZIP 03582: NOAA 1991-2020 normals (USC00276234 N STRATFORD, NH US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.