unfortunately it's not normally something that can be tackled apart from removing all the infected parts and crossing your fingers. It looks like you have at least three parts of that trunk showing signs of the fungal infection, where the tie is, the lower cut off branch and what looks like the upper cut off branch as well. I'd have a good read up of the disease and then make a decision.
It’s budding now on all limbs…. Checked it yesterday
I agree with said comments but think it’s viral spot not verticulum wilt.
i think cut the stub, remove the tie and give it its best chance with feed and conditions and hope for the best. Cutting that twinned stem out completely??? Might aswell get a new acer imo
I was looking at the first pictures when I mentioned v wilt because it looked like a band around one of the stems. Having looked again it is where the branch has been cut and died back, so yes more likely coral spot but not the sign of a healthy tree and the fact that it has found its way in at three different spots, doesn't bode well for the longevity of the tree.
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https://www.rhs.org.uk/disease/verticillium-wilt
unfortunately it's not normally something that can be tackled apart from removing all the infected parts and crossing your fingers. It looks like you have at least three parts of that trunk showing signs of the fungal infection, where the tie is, the lower cut off branch and what looks like the upper cut off branch as well. I'd have a good read up of the disease and then make a decision.
I initially thought coral spot… a bad wind break in summer.., and also a bad cut to resolve bad wind break.
i hope it’s not the end for the acer.
I agree with said comments but think it’s viral spot not verticulum wilt.
i think cut the stub, remove the tie and give it its best chance with feed and conditions and hope for the best. Cutting that twinned stem out completely??? Might aswell get a new acer imo