Maine Planting Zones & Schedule

In Maine, the USDA growing zones range from Zone 3b in the far north to Zone 6a along the southern coast. Northern and inland regions, such as Caribou and Millinocket, endure long, cold winters, ideal for hardy vegetables like potatoes, cabbage, and kale.

Toward the southern and coastal parts of the state, including Portland and Rockland, temperatures are milder in Zones 5b to 6a. These areas support a longer growing season for cool-weather crops such as carrots, lettuce, and peas.

 

Maine Last & First Frost Dates

  • *Keep in mind that frost can occur before or after these dates. Watch your local weather to determine the best time to plant.

  • The growing season in Maine is fairly short, averaging around 155 days. Inland areas have shorter growing seasons than coastal regions. Refer to the planting schedules below to determine the best timing for your zone.

Zone 3 Planting Schedule

Zone 4 Planting Schedule

Zone 5 Planting Schedule

Zone 6 Planting Schedule

Zone 7 Planting Schedule