the white stuff could be "white fly".! Q) ~: H( [/ W2 B9 E7 B
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.# X2 ~7 J+ @ C! U: o N+ g( J0 K
Hibiscus is a typical plant, show helps a lot.