The ideal pruning season will vary between tree species, but will usually be during the spring and summer when the plant is growing most vigorously. Check online or with a nursery to determine the pruning season for your species.
[header] How to trim a bonsai [title] Determine which season your tree should be trimmed during. [step] Bonsai trees should only be pruned during a certain time of year. This is so that the tree can adequately heal the wound created during pruning.