Have you ever wondered how it is that plants avoid pollinating themselves? Walnut trees have evolved to avoid this by separating their male and female flowers in time, with the flowers of one sex ...

In the course of his work, native plant ecologist Joe Callizo, a native of Pope Valley, came across some remarkable northern California black walnut trees. He had told me about them a couple of ...

The genetics behind the alternating sexes of walnut trees have been revealed by biologists at the University of California, Davis. The research, published in Science, reveals a mechanism that has ...

Walnut trees can grow up to thirty-five metres tall, and seriously spread their limbs. (REDA / Contributor / Universal Images Group) However, a couple of years ago, the right tree died.

A Narrows man admitted his role Friday in the illegal harvesting of black walnut trees on federally protected land in Giles County.