Agriculture in Maine
ZIP codes in our Maine data
USDA hardiness zones present
Agriculture is a longstanding part of Maine's rural economy and identity, from the potato fields of Aroostook County to the wild blueberry barrens of the Down East region. Farming and gardening here mean working with a short, cool growing season and rocky, often acidic soils, so growers place a high value on hardy crops and season-extension methods. For home gardeners and market farmers alike, Maine offers a productive but demanding environment where timing and cold tolerance matter a great deal.
Farming in Maine
Maine is best known as the leading US producer of wild (lowbush) blueberries, which grow on natural barrens rather than in planted rows. Potatoes are another signature crop, concentrated in the fertile soils of Aroostook County in the north. The state also supports dairy farming, apple orchards, maple syrup production from its northern hardwood forests, hay and forage crops, and a range of vegetables such as broccoli, sweet corn, and squash. Livestock and animal products include dairy cattle, laying hens for eggs, and smaller numbers of beef cattle, sheep, and poultry, while greenhouse, nursery, and Christmas tree operations round out the farming landscape.
Climate and growing conditions
Maine has a humid continental climate with long, cold, snowy winters and short, mild summers, giving most of the state a relatively brief growing season of roughly 100 to 150 frost-free days depending on location. USDA hardiness zones generally range from about zone 3b in the far north and interior highlands to around zone 6a along the milder southern coast. Coastal areas warm and cool more gradually because of the ocean, while inland and northern regions see sharper cold and later last-frost dates, so gardeners should choose cold-hardy varieties and watch local frost windows closely.
Major agricultural products
- Wild (lowbush) blueberries
- Potatoes
- Dairy and milk
- Maple syrup
- Apples
- Hay and forage crops
- Chicken eggs
- Greenhouse and nursery products
Hardiness zones in Maine
Growers in Maine fall across these USDA plant hardiness zones (by number of ZIP codes in our data):
Local weather & frost dates in Maine
Open any location for its live forecast, frost dates, and planting calendar:
Counties in Maine
Browse local growing conditions, hardiness zones, and weather by county (16 counties):
Market prices & data for Maine
State overviews combine hardiness-zone data from our ZIP database with public USDA market reports and NOAA climate normals. For farm-level decisions, consult your state's Cooperative Extension service. Page updated Aug 4, 2026.