bottle brush tree failing to thrive

Question

My bottle brush is about 4 years old and was well established. This past winter we had a few days in a row below freezing and killed many of the upper branches. I trimmed off the dead ones but more keep dieing and it is not flowering. The color is not very good either.
any help is welcome.

Answer 1

This article may help:

https://www.gardeningknowhow.com/ornamental/shrubs/bottlebrush/bottlebrush-wont-bloom.htm