Every winter, crape myrtle will fall leaves. After falling leaves, we can apply some organic fertilizers, such as hemp sauce residue and animal manure. These are good organic fertilizers. Similarly, the same organic fertilizer can be applied before the new bud of crape myrtle grows in spring, which can make crape myrtle grow vigorously and make the flowers of crape myrtle big and colorful.
In the first ten days of March, crape myrtle is generally budding. At this time, it is necessary to apply nitrogen, phosphorus and potassium fertilizers to help the growth of branches and leaves. By the end of May and the first ten days of June, the mixed fertilizer of phosphorus and potassium should be applied, so as to promote the flowering of Lagerstroemia specie and strengthen its flower branches. Generally July to September is the flowering period of crape myrtle. At this time, you can use some cake fertilizer as the flowering fertilizer, which can make the flowers of crape myrtle more colorful.
If we apply fertilizer to crape myrtle too frequently, it will make the branches and leaves of crape myrtle grow in vain, but if we lack fertilizer and less fertilizer, it will make the branches and leaves of crape myrtle weak, the branches will be thin and dry, and the flowers will not be prosperous and gorgeous. Therefore, we should apply fertilizer regularly according to the growth law of crape myrtle, so as to apply more fertilizer and thin fertilizer to ensure the nutrition needed by crape myrtle. In spring and summer, crape myrtle flowers grow vigorously, so we should apply more fertilizer than usual, but in rainy days and hot summer at noon, do not apply fertilizer, the frequency of fertilization in autumn should be relatively reduced, and in winter, we do not need to apply fertilizer to crape myrtle flowers.
