I have an Esperanza growing on the little hill on the south side of my house. It is about 4 years old and every winter it freezes back. I see other plants in the neighborhood that are growing great and blooming, and they are 6 or 7 feet high. So I know they did not freeze back like mine does. Can you tell me what my problem it?
Esperanza are hardy in zones 9-11, with some success in zones 8.
In colder climates it can be grown as an annual.
Soil conditions, maturity, or plant variety may have something to do with the comparison to neighboring plants.
Here is an article that will refresh you on the care requirements.