Pawpaw trees grow best in slightly acidic (pH 5.5-7.0), deep, fertile, and well-drained soils. Good drainage is essential to success. Pawpaw trees will grow in heavy soils but will not survive water-logged conditions. The tree is small, seldom taller than 25 feet (7.5 meters) and grows best in full sun. Extra care should be given to trees for the first two years to promote growth as the root system establishes itself. Keep the plants well watered and partially shaded for the first year or two. Thereafter, growth accelerates and trees require little care. Fruit production normally begins when the trees reaches 6 feet (2 meters), usually after five to seven years.
1. Space your trees 8-15 feet apart, depending on variety.
2. Dig the hole as deep, and twice as wide as the pot so the roots have plenty of room. If the hole is too deep, add topsoil to the bottom of the hole and compact it firmly so the root ball doesn’t sink as the soil settles. The trunk flare should be even, or a little above ground level.
3. Remove the tree from the flowerpot and place the roots in the hole.
4. Fill the hole, putting the topsoil back in first. You can avoid creating air pockets by working the soil carefully around the roots and tamping down firmly.
5. Create a rim of soil around the planting hole 2 inches above ground level. This allows water to stand and soak in. In the fall, spread soil evenly around tree to prevent damage from water freezing around the plant.