I never know that like orchids, hibiscus also has different types and breeds. I only know it as red, white and colorful hibiscus..hahaha..but check this out. This site is available in 3 different languages, and of course this link is the one in English.
Do check the info on the hibiscus rosa-sinensis, aka Chinese Hibiscus. To understand more about tropical or hardy hibiscus and their history, check this site out. It also has tips on growing better hibiscus.
From my experience, I know that aphids, thrips, scale and whiteflies are the common culprits. Nevertheless my hibiscus is still alive without much hassle. It is certainly the hardy not the tropical type..hahaha..
