RESOURCES - native plants

pennsylvania native plant society

The Pennsylvania Native Plant Society advocates conservation of native plants and their habitats and promotes the increased use of native plants in the landscape

NATIVE PLANT DATABASE (ladybird johnson wildflower  center)

An exceptional resource for information on native plants, including a state by state guide.

USDA PLANTS DATABASE

The PLANTS Database provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories.

Missouri botanical garden - Plant finder

Another great database of plant information - note several search options including "attracts butterflies"