Is Lagerstroemia indica suitable for family planting?

Lagerstroemia indica is one of the ideal tree species for urban greening. But once attacked by pests and diseases, its ornamental value will be reduced.

The harm of Lagerstroemia speciosa to Lagerstroemia speciosa occurs every year, often covering the reverse side of young leaves, making new shoots twisted, young leaves curled unevenly, affecting the formation of flower buds, shortening inflorescences or even not flowering, and at the same time inducing sooty blotch and spreading virus diseases.

Prevention and control methods:

1. Scrape the old bark, cut off the damaged branches in early spring, and burn them centrally to eliminate the overwintering eggs. The wound caused by scraping and shearing should be sprayed with general tree protection liquid in time to disinfect the wound to prevent the infection of germs.

2. Strengthen the cultivation management measures, spray the trees regularly, disinfect them completely, and reduce the source of the disease.

3. When aphids are abundant, cough 40% omethoate, 40% acephate 1000- 1500 times solution or spray spermidine 1000-2000 times solution, but pay attention to avoid phytotoxicity. After spraying, spray a new layer of high-fat film on the leaves in time to suffocate the pests.

4. Artificial propagation and diffusion of natural enemies, such as harmonia axyridis and grassridge larvae, where conditions permit.

5. Use colored boards to trap and kill winged aphids, or use white tin foil to reflect light and refuse to fly.