When large numbers of a bonsai's leaves suddenly die and fall off, the tree.
Mar 25, According to Bonsai Primer, common causes of falling bonsai leaves include natural leaf shedding, inadequate light and excessive watering. Inadequate lighting is a particular problem with indoor bonsai. Leaves have a life span and eventually bushgrind.clubted Reading Time: 1 min. Indoor pest problems like mites can cause a bonsai to drop its leaves as the mites destroy them and weaken the tree. Signs of mites include dropped leaves as well as a white film on the leaves before they fall.
Treat the bonsai with a gentle spray pesticide according to. There are only a few reasons a bonsai tree would be dropping leaves. The most common reasons for your bonsai dropping leaves are overwatering, underwatering, lack of light and possibly even your tree Estimated Reading Time: 3 mins.