Ask-a-Dave's-Gardener: Pale Dogwood leaves with orange brown blotches, 5 by kmoose3

kmoose3 wrote:
Hello everyone!
About 90-95% of the leaves on my dogwood tree have gone a pale yellow/white between the green veins. I've done some research and I initially thought it was iron chlorosis, but now the leaves are showing symptoms that I don't recognize as being associated with lack of iron. Some of the leaves are completely pinkish red, while others are on their way. Many of the leaves are developing brownish blotches (some leaves have holes), and it seems to be getting worse. A couple weeks ago I added iron chelate to the soil around the tree, and today I put bone meal around the base as well as compost.
Does anyone know what's happening to the tree? I would hate to lose it!!
Thanks so much:)