Rhododendron or Madrone? Also, what's this disease?
This is in the corner of the back yard of my 35 year old house. I assumed that it was a rhododendron considering that the rest of the shrubs around the house are either hydrangeas, azaleas or rhodies (pretty much all wal-mart varieties).
This particular bush has madrone-like bark, and is the second largest on the lot. The rest of my rhodies have begun "budding up" getting ready to flower, and this one has no indication that it will be blooming any time soon. I limbed it up off the ground as I suspected that lack of air flow under the plant was contributing to its disease.
It also has this black spot hoopla. A few months ago I went to HD and bought a rhododendron black spot treatment thing and sprayed it a couple times. It seems to have helped, all the new foliage appears to be clear, or at least much less affected than the older stuff.
If you have any clue what it is, I'd appreciate at least a push in the correct direction, whether this is really a rhodie or an arbutus of some sort, and what the disease might be so I can continue treating for it in the correct manner. Thanks!