I need help to figure out what's going on with my Rhododendron. It is approximately 3 years old and for the past 2 years this one gets leaves and flowers on the end of the branches but the interior looks completely dead.
Any suggestions on what I can do to promote growth inside the plant? I fertilize with an acid miracle gro and it receives about 3-5 hours of sunlight daily. There is another one that's about 10 feet away that receives less sunlight and is thriving much more than this one.
Any suggestions are appreciated.