Probably the most popular of the Oriental cherry trees, the Kwanzan cherry tree (Prunus serrulata sp. "Kwanzan") was named after a mountain in Japan. This spring-blooming beauty has double flowers in a deep pink and can grow up to 40 feet without pruning. Its shape is vase-like, and it grows best in USDA hardiness zones 5 to 9.The Kwanzan is tolerant of most soil types, which makes growing it feasible for just about anyone. Caring for a Kwanzan cherry tree is fairly easy as well, since it requires little maintenance, other than keeping the soil moist and pruning routinely.
Planting and Care
Choose a site with full sun and loose, moist, well-drained soil, and plan to plant your Kwanzan cherry tree in the spring, after danger of frost has passed.
Dig a hole twice the size of your tree's root ball, but not as deep, using a shovel. When digging, loosen the soil along the sides of the hole so the roots have ample spreading room.
Place your Kwanzan cherry tree in the hole and spread out the roots. Make sure the tree is level and straight. The top of the root ball should be at the same level as the top of the soil.
Backfill with soil, adding a bit of water and compacting the soil as you go along to alleviate air pockets. Fill the hole with soil up to the trunk's base.
Water your planted Kwanzan cherry tree thoroughly.
Add mulch around the base of the tree, about 2 to 3 inches deep, keeping the mulch about 1 inch away from the trunk.
Prune, if needed, after the tree has finished flowering, by removing dead or broken branches. Prune for height at this time as well.