What medicine should crape myrtle powdery mildew spray?

1. Gardening has a strong ability to prevent Lagerstroemia indica from sprouting. In winter, seriously ill trees can cut off all the branches of the year, remove the diseased leaves and branches, and reduce infection. Family potted Lagerstroemia indica should remove the diseased leaves in time and put the potted flowers in a ventilated and light-transmitting place.

2. Chemical control from mid-May, spraying 500 times of 80% zineb wettable powder, 70% thiophanate-methyl 1000 times of solution, 20% triadimefon 4000 times of solution or 1% bordeaux solution every * *.