the white stuff could be "white fly". 9 i4 R/ S7 K9 w; N2 ~6 A' C/ KI 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. - C/ s! a7 r8 r) H' MHibiscus is a typical plant, show helps a lot.