the white stuff could be "white fly". 2 k: t, c: w9 \' @) C1 Z9 v3 c4 SI 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.8 o9 _% B# P" C3 v
Hibiscus is a typical plant, show helps a lot.