1. After flowering, cut off the failed flowers and prune the branches as soon as possible. Only two or three buds are left on each branch, and all other parts are cut off to reduce nutrient consumption.

2. It is also necessary to cut off too long branches to make the nutrients more concentrated.

3. Third, thinning branches properly, thinning weak branches, promoting the density of branches, and making their later growth and germination more vigorous.

4. In addition, after the flowering period, it is necessary to strengthen management, supplement fertilizer and water, and replace the basin soil.