Zone 3b – 6b · 16 Counties

Know your last frost before you know anything else.

Maine Backyard Gardening turns your county's frost dates into a planting calendar, tracks the weather that threatens it, and connects you to gardeners who've already learned what grows here.

❄ Last frost ~May 2ZONE 6AFirst frost ~Oct 16
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Shown for Cumberland County (Portland area). Find your own county →

Know your dates

Personalized planting windows from your county's frost dates — not a national average.

Watch the sky

Live NOAA forecasts and frost watches, plus growing-degree-day tracking for timing pests and harvest.

Grow together

See what's actually thriving nearby, swap seedlings, and find nurseries, sales, and workshops near you.

The Almanac

Everything on the site

Free to use, kept alive by growers who chip in.

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