What happened to this apple tree on photo and what to do with that?

[CherryTree]

[image:

Thank you.

[told2b]

Woolly apple aphids infest roots, trunks, limbs, shoots, and occasionally f ruit of apple trees. The bodies of these bark-feeding aphids are completely covered by masses of white, wool-like, waxy materials. This aphid is found in colonies on the aerial portions of the tree and on roots during winter. The nymphs migrate up or down the trunk of infested trees during summer an d fall. Scientific name: Eriosoma lanigerum

[Sid in Sacramento]

Looks like some type of fungus, I would take pictures of it and show them to your local plant nursery