Pruning time of ground planted plum blossoms can be carried out within 20 days after flowering. Give priority to with natural tree, cut off cross branches, erect branches, dead branches, too dense branches, etc. And cut short the side branches to promote the flowers to bloom. After potted plum blossoms are put into pots, they should be cut again to lay the foundation for bonsai. Plum piles are usually used as scenery to graft plum blossoms in various postures. Keep a certain temperature, and you can see plum blossoms in full bloom during the Spring Festival. If you want to blossom on May 1, you need to keep the temperature at 0 ~ 5℃ and a humid environment, move out in early April and keep it in a sunny and well-ventilated place, so that you can see the flowers around May 1.