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 ...

Woodpeckers assume a pivotal ecological role in forest ecosystems by excavating tree cavities that serve both as nesting sites for themselves and as critical resources for a diversity of secondary ...

This maple is live and healthy despite a huge cavity in its trunk. This tree is structurally compromised but does not pose a risk because it will do no damage when it fails. Surrounding trees in the ...