Pale Dogwood leaves with orange brown blotches

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kmoose3 Toronto, Canada Jul 20, 2014

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:)

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Sequoiadendron4 Lititz, PA(Zone 6b) Jul 23, 2014

It's hard to say but in pic two, it looks like the chlorophyll are all dying tip to stem. My suggestion would be to do a soil test from several locations in the root base. It's possible that there may be too much manganese or calcium in the soil and that is competing for absorption with the iron.

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