Q: I have an 8-year-old oak tree. It looks like it has a girdling root. Should we cut through the root in two places so it can be removed, or should we leave well enough alone. A: Definitely trim and ...

This photo shows a tree root that is growing above ground and is wrapping around the base of a tree. This is not a normal occurrence for trees. Usually a tree will grow a girdling root or roots after ...

Most plants form symbioses with mycorrhizal fungi since their emergence on land hundreds of millions of years ago. Depending on the availability of carbon (C), these symbioses employ two nutrient ...