The process of growing an apple tree from seed might take anywhere from 7 to 10 years, depending on the variety. During the growing season, apple trees require at least 8 hours of sunlight each day. Crabapples can serve as one of the two kinds needed for successful pollination. 2 to 3 years after planting, dwarf apple trees will begin producing fruit. Depending on the tree's size, it could take as long as 8 years to bear fruit.