the white stuff could be "white fly".7 @% u- f, @ {. [, i0 d% d. e; A4 ?
I had the same problem before. It because your plant is too wet. I showed the leaves twice a day for a whole week, then the white filies were all gone.4 y) P: Z5 P- U
Hibiscus is a typical plant, show helps a lot.