Purdue Master Gardener Program
https://hort.purdue.edu/mg/

Purdue Extension
https://extension.purdue.edu/Pages/default.aspx

Purdue Education Store
https://mdc.itap.purdue.edu/dept.asp

Purdue Consumer Horticulture Resources
https://hort.purdue.edu/ext/conhort.html#.VngsQ1LOdWZ

United States Department of Agriculture Animal an Plant Inspection Service- Plant Health
https://www.aphis.usda.gov/wps/portal/aphis/ourfocus/planthealth

Purdue Plant & Diagnostic Laboratory
https://www.ppdl.purdue.edu/PPDL/

Indiana Native Plant& Wildlife Society (INPAWS)
http://www.inpaws.org/