the white stuff could be "white fly". 3 x7 ], i; }. y+ f: ?7 N8 xI 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. * R- @! l) a2 I4 @) a: THibiscus is a typical plant, show helps a lot.