How to cultivate and manage Lagerstroemia indica?

Lagerstroemia indica germinates late and is suitable for transplanting from March to early April. The root system should be kept intact when digging seedlings, and sufficient base fertilizer should be applied before planting. Fertilizers can be decomposed human excrement and urine, manure, manure and compost, and foot root water should be poured in time after transplanting. The surviving Lagerstroemia indica should be watered every 15 ~ 20 days during the growth period 1 time; Full application of organic fertilizer in early spring and topdressing in May-June are beneficial to flower bud differentiation. In the second year, the flowers are flourishing, and frozen water should be poured before winter to help prevent cold and winter.

The main pests and diseases of Lagerstroemia indica are soot disease, powdery mildew, scale insects, aphids, giant moth and so on. Soot disease mostly occurs on the leaves and branches of Lagerstroemia indica, which is caused by aphids and scale insects. Insect control is the main task, and pesticides are sprayed in time to eliminate aphids and scale insects. Powdery mildew mostly harms young leaves. 70% formaldehyde thiophanate wettable powder was sprayed with 800 ~ 1000 times solution for 3 ~ 5 times, and the effect was good.