What should I do if banyan bonsai flowers get powdery mildew?

It occurs in leaves, tender stems, flower stalks, flower buds, petals and other parts. At first, it was yellow-green irregular spots with inconspicuous edges. Subsequently, the lesion continued to expand and white spots appeared on the body surface. Finally, there are countless black spots in this area. The infected part turns gray, covering its surface in pieces, with unclear edges and dirty white or grayish white. When severely damaged, the leaves shrink and become smaller, the tender tips are twisted and deformed, and the buds cannot open.

Autonomous drugs:

Welsh onion liquid: pound 50g of Welsh onion into mud, add 50g of water, soak for12h, filter and spray the filtrate for 3-4 days to cure powdery mildew.

Rice vinegar: Rice vinegar is rich in organic acids and has a good inhibitory effect on germs. Spraying 150 ~ 200 times diluted rice vinegar on the leaves, spraying 1 time every 7 days or so, and spraying continuously for 3 ~ 4 times can control powdery mildew, black spot and downy mildew.

Baking soda solution: Take 5g of baking soda (also known as sodium bicarbonate), first dissolve it with a small amount of alcohol, then add about 1000g of water to prepare a 0.5% concentration solution, and spray it on plants to prevent powdery mildew.

Satisfied, hope to adopt.