Every year I teach several winter-tree identification classes. Even though they are always held outdoors no matter how cold it is, student evaluations indicate such classes are generally fun. Showing ...

Add Yahoo as a preferred source to see more of our stories on Google. Getty Images Unless you are intent on making your own maple syrup, you probably haven't given tree sap much thought. So, let's ...

The University of Toledo has a class called Science and Policy of Foraging at the UToledo Stranahan Arboretum. This semester, ...

A common myth associated with trees is the sap goes down in winter and comes up in spring. The fact is sap remains throughout a tree all year round. The flow of sap slows, even stops, during winter, ...

Unless you are intent on making your own maple syrup, you probably haven't given tree sap much thought. So, let's take a deeper dive into a tree's 'blood' or sap and the normal flow in the fall for ...