Q: I have a beautiful 10-foot-tall oak that has provided privacy with its wonderfully dense light green foliage. I enclosed a picture of a rapidly expanding bark rot-looking area that seems to be ...

Question for Dan Gill: Recently I had a large Shumard oak tree planted by a local nursery. In the process of planting, they damaged a small section (five inches by six inches) of the bark, about a ...

It started with squalling tires and a big bang. Someone going too fast missed the 90-degree corner below our neighbor’s house and plowed head on into his 50-year-old silver maple. The driver didn’t ...

ANGHI / Getty Images/iStockphoto Q: I have a spruce tree that used to be perfectly shaped. The very top of the tree trunk has been broken off. I think a hawk that stays in our area tried to perch on ...

After a fire, plants may look dead but still be alive. When evaluating what to do with a plant burnt by fire, the best advice is the same as when a plant has been burnt by freezing temperatures: wait ...

It may be an overused quote, but an old Ziggy cartoon states, “We have met the enemy, and he is us.” That can certainly relate to the accidental injury we sometimes inflict upon trees when mowing or ...

Q: I recently noticed a black, tar-like patch on my tree trunk, though it’s not tacky like actual tar. Are these insect eggs? Dried sap? Do I try to scrape it off? The tree has lichen but I don’t ...