In this edition of ID That Tree, Purdue Extension forester Lenny Farlee gives tips on how to identify two species – honey locust and bur oak – from just the markings and scarring on leafless twigs.

Q: A squirrel must have planted a bur oak ... years the leaves have started to turn black around their edges by early October. They fall to the ground with no color change. A second tree in ...

MORE SPERRY: Squirrel credited for planting bur oak A: Azoxystrobin is one of the ... then cover them with shredded tree leaves to protect them from freezing weather. If squirrels are likely ...

Healthy oak trees are not susceptible to oak wilt in an infected area. Bur oak, white oak and other members of the white oak family are resistant to the fungus and can be planted in oak wilt centers.