Wow, a ? I might actually be able to answer! I'm totally new to Hibiscus (hibiscuses is plural?) and I found this forum to ask my own ????'s. However, I did read something just a few minutes ago about how to take care of plants that aren't blooming. Go to this website http://www.fancyhibiscus.com/ and on the left side of the page scroll all the way down and click on A Growing Plan. I guess these are heavy feeders?
Good luck!
Christina

Here is a link that might be useful: A Growing Plan

Hibiscuses bloom on new growth so the ferts would encourage more growth, which has to mature before it goes into a bloom cycle once more. Often nurseries, big box stores, etc., get them from greenhouses right when the controlled growth that occurred after fall/winter pruning has matured to get them in bloom for sale. Basically you have to be a little patient now while it does its growth spurt before it will be ready to bloom again. Don't be too concerned about yellowing/dropping leaves as they will do this when their environment changes (amount of water, sun, temperature). and the stems will resprout new leaves eventually.

In any case, that's a pretty one and I wish you luck with your "baby"! :)

The wholesaler I buy this cultivar just calls it rose. I am not sure if there is a specific name other than that. They are gross feeders and prefer more potassium and less phosphorus inspite of what the folks at Lowes may say. It doesn't mean that what you have won't work but I would consider getting a 3-1-2 ratio fert to alternate with your present fert regime. Also they seem to like an extra kick if magnesium so add a tbsp. of epsom salt every other feeding to keep the green leaves healthier and better able to protect themselves from pests. Good Luck and Happy Growing David