The Purdue Plant and Pest Diagnostic Laboratory

Welcome to the Virtual PPDL

Important Announcements:

NOTE: Due to construction S. Russell St. is currently closed south of LSPS and the Lilly Greenhouses. To reach the PPDL you must access S. Russell St. from State St., not from WIlliams St. from the south. There is a "Road Closed-Local Traffic Only" sign at the entrance to Russell. To get to the PPDL, go around it and turn into the parking area in front of LSPS as usual. Click here for an updated map.

new Updated Form: Herbicide Resistance Testing

Featured Links:


Trees, Ornamentals, Fruits and Vegetables




Plant and Pest Diagnostic Laboratory
Purdue University
915 West State Street
West Lafayette IN 47907-2054

Voice: 765-494-7071
FAX: 765-494-3958


Our Image Use Statement

Picture(s) of the Week:Anthracnose of Pepper

What's Hot: Do Not Confuse Hover Flies With Sweat Bees

Indiana Department of Natural Resources

NPDN Training and Education

Purdue Plant & Pest Diagnostic Lab Purdue Cooperative Extension Service