Q.I Have An Azalea Bush That I Planted Maybe 5 Years Ago. It Is Not Doing Very Well. About Half Of The Leaves Are Falling Off On
the one side and the other side still looks pretty good. Can you help me with the problem?

Certified GKH Gardening Expert
Unfortunately, your photo did not come through.
Two things come to mind. Fire blight, or sun damage.
Here are some articles that will help:
https://www.gardeningknowhow.com/ornamental/shrubs/azalea/common-azalea-problems.htm
https://www.gardeningknowhow.com/plant-problems/disease/fire-blight-remedies-and-symptoms.htm
https://www.gardeningknowhow.com/ornamental/shrubs/azalea/azalea-branches-dying.htm
https://www.gardeningknowhow.com/garden-how-to/info/what-is-copper-fungicide.htm