What kind of fertilizer can make the trees in Wei Zi bloom more?

Generally, to promote trees to bloom more, you can apply some calcium, magnesium and phosphorus compound fertilizer, and be careful not to apply too much, otherwise it will easily burn the roots.

In addition to fertilization, pruning is also very important for Lagerstroemia indica flowering.

The flower branches of Lagerstroemia indica were newly picked that year and should be pruned before the branches germinate in winter or the following spring. When pruning, the branches should be evenly distributed, the crown of the tree should be complete, and the weak branches and over-dense branches should be cut off. In that year, other branches should be cut short by 2 ~ 3 cm.