Help My Hibiscus Plants

Question

My hibiscus plants have a whitish, velvetish dust that is on the stems at the tip. It forms a blanket. I have noticed that the new buds are getting brown and falling out. If they do grow into flowers, it is deformed.  I’d like to get rid of whatever pests naturally.

Answer 1

It is powdery mildew. This article will have some suggestions for getting rid of it organically:
https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm