The shape of potted hawthorn is straight, curved, inclined, layered or happy. When modeling, the trunk should be short, the angle of the main branch should be large, and the upright branches on the back should be controlled, not too big and too long, and a slightly flat crown should be formed as far as possible to prevent the appearance of twigs and crown cavity light bands, promote the development of thick and short branches, and achieve the purpose of internal and external three-dimensional effect. During the modeling period, it is necessary to make as few or no results as possible, so that the branches in the basin can be formed as soon as possible. Hawthorn branches are brittle and hard, and they are easy to break in bending parts. When drawing is needed, it should be done before germination. In general, summer pruning should inhibit the apical dominance and promote branching. When bending, use more wire to tie it, which is better than pulling branches. Young hawthorn trees grow vigorously, with small angle of single branch and large growth. Therefore, we must use the methods of pulling, bending and tying to ease the growth potential and increase the branching angle. For branches that need to be extended and branched, they can be shortened in the middle and lower parts and pruned in summer to increase the amount of branches. For other intermediate branches, short branches, leafy branches and some long branches, the method of slow release and no cutting can be adopted, and the branches can be sparse. When pruning in summer, before germination, open the branches of upright and lush trees for more than 30cm. For the middle and lower parts of thick and long branches, cut a knife at 0.5cm above the bud and reach the xylem, so that the middle and lower parts of the branches germinate and promote germination. When the new shoots of Wang Qiang grow to 20 cm, leave 4 ~ 6 leaves to pick the core, promote branching and increase the number of branches. During the flower bud differentiation from mid-July to early August, cutting or girdling the trunk or strong branches on the trunk can inhibit the growth and promote the flower bud differentiation.

Mature potted trees should stabilize the tree shape and shape, cultivate certain thick, short and strong fruiting branches, and make the annual flowering branch rate reach about 50%. Pruning is mainly based on thinning and renewing rejuvenation branches. Thin branches, cross branches, overlapping branches, over-dense branches and pests and diseases are thinned in time, and long and redundant branches and large and medium-sized branches that affect the tree shape are appropriately retracted. The retracted pruned branches should be kept in the right direction, and the remaining branches should be released slowly if they are not cut. In order to renew and restore the branch group, we should choose thick, full and full-sprouted fruiting branches and thin and weak branches. Suppress peripheral branches, after ascension, the small branch group is still strong, and the old branch group is still new. For large branches, release and retraction will be carried out, so that the spacing between mother branches will be kept at 10 cm. When pruning in summer, the redundant sprouting tillers should be removed in time before germination, and the flourishing branches should be cut short. By cutting again before flowering, the ratio of fruiting branches to vegetative branches should be adjusted to 1: 2 ~ 3.