Pruning method of Lagerstroemia indica

There are two kinds of pruning in spring, one is combined pruning, which is also called pre-bud pruning. Second, the second link of winter pruning is also called post-bud pruning. Pruning before bud is to get ahead of new shoots, otherwise it will destroy the physiological function of plants. The method is similar to winter pruning, except that the cut branches can be used for cutting or grafting propagation immediately. Pruning after bud is also called "wiping bud", because Lagerstroemia indica has very strong germination ability, and new branches may sprout in the place where buds are fixed or uncertain in spring. In order to ensure the beautiful tree shape and dense branches and reduce the invasion of pests and diseases, bud pruning is needed. Bud smearing should be done at least three times, with a cycle of one week or ten days, until the remaining new branches are lignified.

2, summer and autumn pruning

Pruning in summer and autumn is a method to delay flowering. Generally, it is selected about 10 days before autumn. The method is to cut off the annual flower branches, leaving only 2 ~ 3 bud points at the base of the flower branches, forcing them to send new flower branches. This method should combine soil loosening and fertilization management, and ensure that plants can grow in a well-ventilated and sunny environment, otherwise it may be counterproductive.

Pruning in summer and autumn is to lengthen the flowering period of Lagerstroemia indica. Pruning the recently growing branches will only leave a few buds on the branches, which will promote Lagerstroemia indica to grow new branches again and ensure its beauty. This pruning method is called bud pruning.

3, winter pruning

Pruning in winter is to ensure normal flowering and form large inflorescences, so pruning in winter is very important. If planted in the ground, the branches born in the same year should be cut off at the height of the main branches, so that the strong branches can bloom in the next year; First, cut off all sprouting branches, diseased branches and overlapping branches. In order to beautify the shape, the top of the full terminal bud of other branches is cut short at ` 1 cm, generally leaving only about 5 cm.