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 1ZONE 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