What fertilizer do you use for hibiscus?

What kind of fertilizer to you use for your hibiscus? (include the numbers if you can)

Thanks,
Julie

I included a picture just to have something to look at.

My local nursery recommended RCA (Rhododendron Camellia Azalea) when the tropical hibiscus I had used was not available. Here is another thread that may be of help. http://davesgarden.com/forums/t/316649/

WOW what a shot.

I bought Space City Hibiscus Fertilizer from Southwest Fertilizer in Houston. The fertilizer also contains chelated trace elements Cu, Fe, Mn and Zn. The directions suggest adding some epsom salts to add Mg to the fertilizer. This formulation is also recommended for Brugmansias so I've begun to use it on all my flowering plants.