A comprehensive reference and discussion about how to plan and develop landscape designs using native plants, with a focus on the northeastern counties of Pennsylvania. Covers 2,150 species of trees, shrubs and herbaceous perennials and annuals, 100 kinds of regional soils, and 135 ecological communities with detailed plant associations for each. Also included are the 540 protected plant species in Pennsylvania, invasive species of local concern, plant sources and additional resources for native plant enthusiasts.