How to Prune Japanese cherry?
Little pruning is needed. Remove diseased, damaged, crowded or crossing shoots and unwanted growth. Prefer summer pruning to reduce the risk of silver leaf infection.

Japanese cherry · Prunus serrulata
Also known as: oriental cherry
Grow in any moist but well-drained, moderately fertile soil in full sun
Little pruning is needed. Remove diseased, damaged, crowded or crossing shoots and unwanted growth. Prefer summer pruning to reduce the risk of silver leaf infection.