Cold Winters make cold hardiness in plants an important topic, when considering what fruit-trees or berry plants to plant in Maine. Apple trees are the most successful cold hardy fruit tree that can be grown outside. Several apple tree cultivars, Lodi and Granny Smith apple trees are often grown in pick-you-own fruit orchards. Sour Cherry Trees like the red Montmorency cherry tree and the red North Star cherry are cold hardy and can be grown there. Some home gardeners in Maine claim to be growing pear, peach, and nectarine trees, and native wild plum trees are being grown for wildlife deer and game birds.
Red raspberries are bearing planted on organic berry farms in Maine where pick-your-own raspberry bushes reportedly are profitable and produce tasty raspberries. Blueberry plants are native to Maine, where large blueberry harvests supplement a berry farm income.