How to fertilize crape myrtle bonsai?

Fertilization requirements of Lagerstroemia indica bonsai: Too much fertilization will easily lead to excessive growth of branches and leaves, but if lack of fertilizer will lead to thin branches, yellow leaves, weak growth of the whole plant, few flowers or no flowers. Therefore, it is necessary to apply fertilizer regularly, apply more fertilizer in spring and summer peak season, and apply less fertilizer after autumn. There is no need to apply fertilizer when winter enters the dormant period. Don't fertilize at noon in rainy days and summer when the temperature is high. Fertilization concentration is applied every 10 day from beginning of spring to beginning of autumn, topdressing every half month after beginning of autumn, and fertilization is stopped after beginning of winter.