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 ...

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 ...