I have a poplar tree in my backyard that is 1 1/2 years old. Over the past year and a half it has done a few funny things. Upon planting it, the leaves went yellow in the summer. I think we were over ...

Hybrid poplar tree leaves might contain the ingredients for the biodegradable plastics of the future. Researchers Steven Strauss and Ganti Murthy of Oregon State University are using a grant from the ...

IT is well known that the vibratory motion of the leaf of the aspen and other poplar trees is caused by a flattening of the petiole at its junction with the lamina. The lower part of the leaf-stalk is ...