When homeowners notice a hollow or wound in a tree, the instinct is often to fix it: to fill the cavity with something that ...

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 ...

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 ...