DEAR NEIL: We have a red oak in our backyard. Bark started peeling in the fall, but it has become prevalent this spring.

The color and texture of the bark is the first thing I look at to identify a tree in winter. Tree bark comes in a variety of shades of brown, gray and black, though many have a yellow, orange, red ...

Q. I have a 3-year-old Shumard red oak that has done wonderfully, but recently I noticed large patches of bark missing and parts of the tree starting to yellow. One arborist told me it was due to ...