How does Lagerstroemia microphylla shed its leaves in spring?

1. Strengthen the light. Lagerstroemia indica likes sunshine, so it must be placed in a sunny place outdoors during the growing season.

2. Water it in time. Pot soil should be kept moist in spring and winter, and watered once every morning and evening in summer and autumn. In case of drought and high temperature, watering times can be appropriately increased every day to store tap water for 2 ~ 3 days. 3. Fertilize regularly. Too much fertilization on potted Lagerstroemia indica is easy to cause white branches and leaves. If the lack of fertilizer leads to thin branches and yellow leaves, the whole plant will grow weakly, with few 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.

4. reasonable pruning. Lagerstroemia indica is resistant to pruning, with strong branching ability and large growth of new shoots. Therefore, after flowering, residual flowers should be cut off to prolong the flowering period, and long branches, overlapping branches, cross branches, radiation branches and diseased branches should be cut off at any time to avoid consuming nutrients.

5. Change pots in time. Potted Lagerstroemia indica is replaced every 2-3 years, and 5 parts of loose mountain soil, 3 parts of pastoral soil and 2 parts of fine river sand are mixed to make culture soil. When changing pots, organic fertilizers such as bone meal and bean cake powder can be used as base fertilizer, but the fertilizer can't directly contact the root system, so as to avoid damaging the roots and affecting plant growth. The above five points are the main reasons why Lagerstroemia indica leaves. You can change the maintenance method according to the situation, so that Lagerstroemia indica will not lose its leaves. Another reason is that Lagerstroemia indica is a deciduous shrub, and it is normal to shed leaves in winter.