My azalea bushes

Question

They have a green bark looking stuff on the stems. It is killing my plants.

Answer 1

Here are a couple of links that discuss common Azalea problems.
It should help you match up the symptoms and treatment solutions.

Neem Oil is a good treatment, as it works as an insecticide and fungicide.

https://www.gardeningknowhow.com/ornamental/shrubs/azalea/azalea-bark-scale.htm
https://www.gardeningknowhow.com/ornamental/shrubs/azalea/common-azalea-problems.htm
https://www.gardeningknowhow.com/ornamental/shrubs/azalea/common-azalea-problems.htm