Ailanthus Level

Forestry for the Bay
Smithsonian Conservation Biology Institute
Trees Virginia
U.S. Forest Service, Northeastern Area, State & Private Forestry
Virginia Department of Forestry
Virginia Department of Game & Inland Fisheries
Virginia Master Naturalist Program
Virginia Tech College of Natural Resources & Environment
Virginia Tech Department of Forest Resources and Environmental Conservation

Kudzu Level

CWC Chemical, Inc.
DuPont
Dow AgroSciences
Virginia Native Plant Society

Stiltgrass Level

Audubon Naturalist Society
Conservation Services
International Paper
Maryland Native Plant Society
Piedmont Environmental Council
Virginia Tree Farm