"I don't know (why it happens), " Potega said, although she has a theory that its root may be her desire to communicate whatever she'd been dreaming about.

CNN: STORY HIGHLIGHTS

D-shaped holes in the bark or new tree shoots emerging at the root zone of your ash trees may be a sign of infestation by the Emerald Ash Borer, an insect native to the Far East that targets ash trees, says Dave Dailey of Birchcrest Tree and Landscape, in Rochester, N.

WSJ: Getting to the Roots of Your Trees' Stress