Macoun apples are named after a Canadian fruit breeder and were developed at the New York State Horticultural Center in Geneva, New York in 1932. They are known as "New England Dessert Apples" for their very sweet, very juicy fruit, which is not unlike McIntosh. Macoun apple trees are available in dwarf, semi-dwarf and standard sizes and thrive in the Northeastern United States.
Make sure Macoun apples can grow in your climate zone. Native to the Northeast, they thrive in USDA Hardiness Zones 4 through 8, which encompasses most of the northern United States, except on the coasts.
Decide what size you want. Macoun apple trees come in dwarf, semi-dwarf and standard sizes, depending on the rootstock to which the tree has been grafted. Dwarf varieties top out at 8 to 12 feet; semi-dwarf trees grow to between 12 and 18 feet. Standard-size Macoun apple trees can reach a maximum height of 18 to 30 feet.
Visit nurseries near you and examine Macoun apple tree specimens. A tree that's too leafy and green may have been over-fertilized, which could lead to slowed fruit production. Carefully examine leaves for spider mites, fungus and other maladies common to apple trees; select only a healthy specimen.
Hit the computer and search for online nurseries if your local search for Macoun apple trees doesn't pan out. There are a number of online sellers of fruit trees that carry Macoun apple trees, including the Woodstock Nursery of Neillsville, Wisconsin and the Adams Nursery of Aspers, Pennsylvania (see Resources, below). Trees with a half-inch trunk and a height of 5 to 6 feet typically sell for under $30.