Is it root bound? That's one of the first things I check when one of my hibiscus isn't blooming. Either that, or it may want to be fertilized.
Barb

Thanks for the input, Barb. I actually saw color starting to issue forth from one of the buds this morning. Maybe something is going to happen soon. On the other hand, now that you mention it, I don't use much fertilizer. Perhaps I will try a little more.

Don't do anything ---- you have buds ---- give them time.

Shagnasty

It's blooming! Great big purple blooms. I've been waiting all summer for something to happen and was wondering if the autumn freezes would arrive before the blooms. This is my second year trying to grow hibiscus. Last year I had a small, single stem hibiscus which bloomed until I didn't water it enough. This year my potted hibiscus (I bought from the nursery) has grown into a bush. Lots of buds all over it. I don't want it to die this winter, but it's pretty big to move into the house. Can you cut these back?