I Need Help With My Cherry Tree

Question

My cherry tree developed some mushrooms and light green spots . Couple of limbs died. Its a 12 year old tree – is there anything I can do to save it from dying . Please help

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Answer 1

I don't see any signs of mushrooms, but I do see the green lichens. They are harmless, though.

The dieback is probably due to another non-fruiting fungus, algae, or bacteria.

This seems to be, likely, Phytopthora root rot from what I see. Here is an article that will help:

https://www.gardeningknowhow.com/plant-problems/disease/what-is-phytophthora.htm