Prune plants

How to prune plants Pruning Bonsai plants is similar to other plants. Pruning effects how fast and in what direction plants will grow. Winter is a very good time to prune. If you have fast growing plants and want to slow them down one of the best times to prune is after they've flushed out. In the spring they have a lot of stored energy, after the leaves flush out, give them a heavy haircut. This will slow their growth dramatically.