Hi! When we moved into our home @2 years ago, the one side had 2 evergreen bushes and one small evergreen tree on it. Within the first year of being here, the 1st evergreen bush died. Then this past spring, the small evergreen tree died. We dug these up and planted azalea bushes. However, the last evergreen bush is starting to get some brown spots in it. I have cut these parts off and fertilized it, but I am not sure if that will help. I don't know much about gardening. Does anyone know what could have caused the other 2 bushes to die? Is it too late to save this bush? Can anyone give me some pointers on what to do to possibly prevent this bush from dying also.

Thank you,