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Sycamore Trees

Q.What Is The Cause Of This Damage

Zone Leeds | Tommy Martin added on May 13, 2020 | Answered

This is my friends London plane. It is suffering sparse foliage but the thing I’m puzzled by is the damage to the trunk and bark. This photo is one metre up the trunk. I can’t decide if it’s wilt, anthracnose, a borer pest or massaria. Can you help?