Native and Invasive Plants
Native plants have many advantages for the home gardener because they are often easier to grow since they are adapted to local soils and climate conditions, and they require less watering and fertilizing than non-native (exotic) plants. Natives are more resistant to diseases and do not need treatment with pesticides.
List of great native plants in Pennsylvania.
Tree, shrub, and perennial native plant lists for different growing conditions (sun and shade, dry and moist).
List of invasive plants commonly planted by Pennsylvania gardeners and the native plants that you can use to replace them.