Qld bottle tree bonsai
Thank you for your information. To assist you, it would be helpful to know what country you and your tree are in, the size and content of the bonsai container, how old the tree is, what your watering and fertilization habits are, and how much sun the plant receives. Also, do you happen to know the exact variety or cultivar of your plant?
I'll try to help more, if you send more information. Thank you!