The second edition of The Plants of Pennsylvania is the authoritative guide to identifying the nearly 3,400 species of flowering plants, ferns, and gymnosperms

Ralph Waldo Emerson defined a weed as a plant whose virtues have not yet been discovered. To the wild-plant enthusiast who has discovered the virtues of many pl

Authoritative, encyclopedic, lavishly illustrated guide to the trees of the state and region—from the Morris Arboretum, the official arboretum of the Commonwe

Three hundred million years ago, ferns dominated the earth's surface, forming extensive marshes and forests with heights of over twenty-five meters. Today, fern

A comprehensive reference and discussion about how to plan and develop landscape designs using native plants, with a focus on the northeastern counties of Penns