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Planting calendar for ZIP 06359 (North Stonington, CT)

When to plant vegetables in North Stonington, CT (USDA hardiness zone 6b). Typical last spring frost around Apr 11, 2026 10 days year to year), first fall frost around Oct 31, 202611 days).

Playing it safe? Spring frost holds off until about Apr 23, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full North Stonington, CT planting calendar for dates typical of the whole city.

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Month by month in North Stonington, CT

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February

March

April

May

August

September

Understand your frost dates

Frost dates for ZIP 06359: NOAA 1991-2020 normals (USW00014794 WESTERLY STATE AP, RI US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.