How long is normal does the fire bush life?
How Long Is Normal Does the Fire Bush Live?
Certified GKH Gardening Expert
There is not much information on this subject, it seems. This website (http://gardeningsolutions.ifas.ufl.edu/plants/ornamentals/firebush.html) has some limited information, but you can always contact your local extension service for more information.
You can find the closest one to you using this link: https://www.gardeningknowhow.com/extension-search/