North Oakland Headwaters Land Conservancy  www.nohlc.org

Michigan State University Extension www.msue.msu.edu

Ohio State University Plant Facts  www.plantfacts.osu.edu/plant

Michigan Natural Resources Conservation Service  www.mi.nrcs.usda.gov

Michigan Association of Conservation Districts  www.macd.org

Oakland County  www.oakgov.com

Michigan Department of Natural Resources  www.michigan.gov/dnr

Michigan Department of Environmental Quality  www.michigan.gov/deq