Overview
Horse Chestnut Bonsai (Aesculus species) is a large-leaved deciduous tree with bold buds, candle-like flowers and powerful trunk character. It is best suited to larger bonsai, experimental native-style trees and seasonal displays. For UK growers, treat it as: Outdoor.
Placement
full sun to partial shade
Watering
keep evenly moist; large leaves transpire heavily
Feeding and fertilising
feed moderately during spring and early summer
Pruning and wiring
manage strong buds and shorten shoots; leaf size is naturally large so use for medium or large bonsai
Repotting
repot every 2-4 years in early spring
Propagation
conkers/seeds or nursery material
Pests, diseases and common issues
large leaves, leaf miner, bleeding canker, scorch and coarse internodes