Have you been trimming the bush? If so, what time of year?

No trimming. It just doesn't bloom. I would really like to have it produce flowers because they're supposed to be so pretty in the early spring. So I hope someone can suggest something.

Have you tried a slow release fertilizer? Now is a good time to do that and then again at the beginning of summer.

lclear, are you CERTAIN they are loropetalums? Hope this doesn't sound absurd, but I just can't imagine them not blooming.

Try applying a high phosphorus fertilizer. Commonly the name on these types of fertilizers are "Bloom", Super Bloom, Triple Super Phosphate.
In regards to the later, I prefer a high phosphorus fertilizer that also has a low amount of N and K, iron and the mirco elements so to not lock up and create too much of an unbalance.
A well stocked garden nursery will have this product in stock or any hydroponic or pot growing shop will have it.

Everything seems a little late this year with warm weather this week they will bloom .we had low thirty at night last week and high seventy s this week every thing starting to pop in southern va.