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 ...

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 ...

For all the attention we give our flower beds, trees are an indispensable part of our landscape. Oaks, pecans, magnolias and others add shade, character and beauty to our yards. But behind their ...