to "grow" your gardening
This is noted as the "most comprehensive native plant database for North America"...and I believe it is.
Although specific to Missouri, this site also provides excellent information on native plants for our (SEPA) area.
UofDE's cooperative extension has an excellent "sustainable landscaping" section - so much to learn!
PennState extension has some interesting and helpful articles in their "landscaping for wildlife" section.
Invasive Plants resource for Pennsylvania. As you learn more about natives, you may be inspired to replace any invasives on your property. There are great online resources to help you identify and understand the harm these plants have on our local environment.
NATIVE PLANT RESOURCES
After 30+ years of planting, reading "The Humane Gardener" and "Bringing Nature Home" rocked my gardening world. These are just a few favorites to get you started.