My pomegranate flower was destroyed by pests this year. Pests are as white as white, and they are everywhere on the trunk, but they have withered. How to prevent it?

According to the information you provided, pomegranate trees may be affected by pests, such as scale insects or moths. Here are several possible ways to prevent it:

1. Manual removal: If the pests are not serious, you can try to remove the white worms on the trunk by hand or with a soft brush.

2. Drug treatment: If the pests are serious, consider using special pesticides, such as 50% chlorpyrifos EC 1000 times solution, and spray pomegranate branches and leaves once every 7- 10 day for 2-3 times in a row.

3. Preventive measures: Pomegranate trees should be pruned and reshaped regularly during the growth period to keep the trees ventilated and transparent, enhance the vitality of the trees and improve the ability to resist pests.

If the above methods cannot effectively control pests, it is recommended to consult professional plant protection experts or local agricultural technology departments for more detailed guidance and help.