Answer: Those are two types of oak galls that are the result of tiny wasps laying their eggs on your tree. The wasp produces a growth-regulating chemical that induces the tree to produce the galls.

Q: I have a 60-year-old oak tree in my backyard with grass beneath it. The grass dies out in the cold months. Is there a ground cover that I could plant there instead?

Oak wilt is a fungal disease that is spread by sap-feeding beetles through open wounds in the tree. The disease causes blockage in the tree's water distribution system, leading to death.

Dear Amy: I’ve lived in my home for five years. There is a very large tree in the backyard. At this time of year, the leaves obviously fall to the ground in both my yard and my neighbor’s yard.

You can email Amy Dickinson at askamy@amydickinson.com or send a letter to Ask Amy, P.O. Box 194, Freeville, NY 13068. You can also follow her on Twitter @askingamy or Facebook. ©2023 Amy Dickinson.

Help from strangers "I heard the tree snapping, and I looked up," Montoya said, recalling the horror of seeing the giant oak falling on them. "I heard my son screaming for help, papa help." ...

Advice Ask Amy: Am I responsible to pay for cleanup of leaves that fall from my tree into my neighbor’s yard? Published: Dec. 08, 2023, 2:00 p.m.

Homes & Gardens Ask Extension expert: What’s a silver-spotted tiger moth, and will it damage my tree? Published: Apr. 02, 2023, 6:30 a.m. Silver-spotted tiger moth OSU Extension Service By ...

In this edition of ID That Tree, we’re going to introduce you to another member of the oak family found in Indiana, and that’s northern pin oak. You can find it in the northern part of Indiana on dry ...