QUESTION: We have a healthy live oak that has developed a small pocket where two limbs come together. Water collects in the cavity, and it looks as if the area is starting to rot. Should I fill it ...

Question: I have a multi-trunk Albizia julibrissin that is 7 to 8 years old. It started out with five trunks, but one died off the first year and another was growing out of the center and slowly got ...

Q. What does Cornell recommend doing with cavities in trees? Should I fill them? Should the tree be taken down? — Patrick, Grahamsville A. The most common causes of cavities are improper pruning, ...

Question: We have a can of spray foam that says it can be used to fill cavities in tree trunks. There's a hole in one of our trees where a branch was removed -- it's about waist-high. The hole extends ...

Q: I have two very old oak trees that each have a hole in the trunk about 2 feet in diameter that was there when we built our house 30 years ago. Tree specialists have said to leave them alone, which ...

Q: I have a beautiful maple tree in my front yard. There is a big hole in the trunk where a branch was cut off. There seems to be water inside. A neighbor said it needs to be filled. Thomas “Tater” ...

Q: I have a tree problem. A cavity is developing, about the size of a large saucer, in the main trunk of a 25-foot hawthorn tree. Are there any remedial steps that I might take to save this tree? A: ...

Don’t tell your dentist I said this, but cavities are not only a good thing to have, they are also an essential component necessary for many species of animals to survive. Of course, I’m not talking ...