A Maryland program to spot and document its biggest trees started a century ago. John Bennett is the man who keeps the ...

If you spend enough time looking at and working with plants, you’ll inevitably come across galls. Galls are abnormal growths and can be caused by a variety of different organisms, including insects ...

Got a problem with invasive ground cover weeds in your yard? Learn which plants are a problem and how to stop them in their ...

Vintage Clip Art and Illustrations | Oak Tree "Old engraving of an oak tree, isolated on white. Scanned at 600 DPI with very high resolution. Published in Systematischer Bilder-Atlas zum Conversations ...