Help ID these spots?

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TexasDollie Dewey, AZ(Zone 7a) Feb 02, 2014

Monterrey Oak, badly planted a couple years ago, (backfilled with loose compost, suffered serious neglect during first year of of establishment) but we brought it back around with some TLC our first year in this house (May 2013 to now).

Tons of new growth, but the leaves had these spots, and there's a whitish fungus looking stuff in one of the cracks of the trunk near the ground.

Ideas for what this is, (or is it two separate issues) and what, if anything, we should do about it?
Thanks in advance.

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sallyg Anne Arundel,, MD(Zone 7b) Feb 06, 2014

Hi, sorry you haven't had an answer.

The leaf spots look like a fungus to me but I am far from the best source. Are all branches seemingly affected to the same degree?
The fungus in a crack on the trunk sounds more serious.

I'm guessing one of the better ones here will say it had been severely stressed and now suffering two different problems due to that.

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TexasDollie Dewey, AZ(Zone 7a) Feb 07, 2014

Thanks for weighing in, Sally. I've bought an antifungal, but figure I'll wait until spring to try it. The spots do seem to be a symptom of the tree's earlier stress, as the newer leaves don't have it nearly so bad. No evidence of it anywhere except the leaves. The brown leaf edges are just winter burn...I'm hoping another year of good water and the right nutrients will have this fellow in good health.

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Muddy1 Vienna, VA(Zone 7a) Feb 14, 2014

I agree with Sally; it looks as if your oak is diseased.
I try to avoid using triple-barreled non-organic products when at all possible, but if this were my tree, I'd do what I recently did for my young maple after I discovered that an insect had bored through a limb to the trunk: mix up a batch of systemic (mix and pour) Bayer or Ortho 3-in-1 disease and insect control and fertilizer and pour it on right now. Hopefully, it'll recover and you won't have to bring out the big guns again.


This message was edited Feb 14, 2014 8:51 PM

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