Submitting a Plant Sample

Plant samples for diagnosis or identification can be taken to your local extension office or mailed to or dropped off at the clinic directly.

Office Address and Directions

Plant and Insect Diagnostic Clinic
327 Bessey Hall
Ames, IA 50011

Directions to the clinic from I-35 as well as map of our location on Iowa State University's campus can be found here.

Submission Forms

Please print and complete the appropriate submission form and include it with your sample.

General Tips for Sample Submission

Plant Submission Instructions

Field Crops


Wrap specimens in enough clean, absorbent material (such as paper towels) to absorb all leaks.

Herbaceous Plants



Woody Plants