when the perennial plants are too large for indoor cultivation, they can be re-pruned by changing pots, removing most branches, and at the same time cutting off some roots and re-potted. Before leaving the house in spring, you should turn over the basin and make appropriate plastic pruning. For plants that fall off their feet too high, they can be retracted and pruned to promote the germination of new shoots. You can leave about 3 cm for coring. After the lateral buds grow, leave three leaves 15 to 2 cm for coring.

Liriodendron chinense, also known as Eupatorium odoratum, is an evergreen tree of Araliaceae. Its leaves are palmately divided, with 5-8 leaflets, shiny leathery, green and white flowers, and then turn red and fragrant. Liriodendron chinense grows slowly, and it is easy to sprout branches, so it needs to be trimmed frequently.