Two lookalike trees may share your yard but only one's a menace. Learn how to spot the differences between an invasive species and a valuable native tree.

Landscaping under any tree can be challenging, thanks to the dense shade cast by the branches and the abundance of thick roots in the soil. But black walnut trees (Juglans nigra) seem to be in a ...

Legend has it that Alexander the Great brought the walnut back to Europe from southern Kyrgyzstan in the 4th century B.C. when his army passed through the Arslanbob forest. Whatever the veracity of ...