Why do the buds keep falling off my hibiscus before opening
i don't have your answer, but i wanted you to know i edited your post for safety reasons.
HI
Gpatten sounds like low humidity to me heres a link i found for trouble shooting hybiscus plants.
http://www.bachmans.com/retail/tipsheets/indoor_plants/TropicalHibiscus.cfm hope this helps.your friend in gardening mike57