Bonsai Training Information

Prunus serrulata Kwanzan
Japanese Flowering Cherry, Kwanzan Cherry, Oriental Cherry, Kwansan Cherry

A small to medium sized tree commonly seen as street trees with double whorls of pink flowers and black fruits. The tree is intolerant of poor drainage.


Formal upright, Informal Upright, Slanting, Cascade, Group planting, Saikei




Full sun, but semi-shade in summer.


Need frequent watering, especially in summer. Reduce watering in winter. Do not allow the flowers to get wet or they will rot.


Every two weeks after flowering has finished through late summer. Use liquid bonsai fertilizer or half-strength general purpose food, switching to a formula high in potassium towards the end of summer. Requires a break in feeding through the heat of summer, but feeding may be resumed till mid-autumn.

Leaf and Branch Pruning:

Prune back tips during growth as necessary. Developmental pruning of branches may be performed in winter. Cherries are sometimes displayed with significant amounts of deadwood. Remove flowers as they fade.

Re-potting & Growing Medium:

Every second year in spring, using well drained basic bonsai soil. Use 1 Part Akadama and 1 Part Pumice.


Wiring can be done in spring-summer, but care must be taken to protect the bark.


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