Desert Botanical Garden: www.dbg.org
University of Arizona Cooperative Extension: ag.arizona.edu/extension
Arizona Nursery Association: www.azna.org
Arizona Municipal Water Users Association: www.amwua.org
Arizona Native Plant Society: www.aznps.org
Maricopa County Cooperative Extension: www.ag.arizona.edu/maricopa/garden
Arizona Department of Water Resources: www.azwater.gov
Master Gardeners: www.mastergardeners.org