Austin Community Foundation
http://www.austincommunityfoundation.org/

City of Austin Grow Green Program
http://www.ci.autin.tx.us/growgreen/
Good resource for plant and gardening information for Central Texas.

Capital Area Master Naturalists
http://www.camn.org/

Lady Bird Johnson Wildflower Center
http://www.wildflower.org/

TPWD Backyard Habitat Program
http://www.tpwd.state.tx.us/huntwild/wild/wildscapes/certification/best_of_tx/

National Wildlife Federation Backyard Habitat Information
http://www.nwf.org/backyardwildlifehabitat/

National Wildlife Federation Habitat Stewards Program
http://www.nwf.org/volunteer/habitatsteward.cfm

Invasive Exotic Species Information
http://www.invasive.org/

Sierra Club
http://www.texas.sierraclub.org/austin/

Highland Park West Balcones Area Neighborhood Association
http://www.main.org/hpwbana/

Texas Parks and Wildlife Department
http://www.tpwd.state.tx.us/