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Plant and Insect Identification


The NDSU Plant Diagnostic Lab provide plant and insect identification to the public. Our lab accepts both physical samples and digital images of plants/weeds and insects. Please note that we do not process samples collected from animal and human body parts.

We are most likely to be successful in identifying plant and insect samples collected from North Dakota and the Red River Valley region. If you are residing out of state, please contact your local Extension office or a diagnostic lab/clinic within your state/region for assistance.

Please refer to the sample submission guidelines below before submitting samples.

Sample Submission Form



FREE for ND Residents (for a limited number of samples)
$30 Commercial and Out-of-State Samples

We reserve the right to charge for plant and insect identification requests. 
Please contact us before submitting multiple samples.


Submission Guidelines for Insect Identification

Note to ND Residents:

NDSU Extension has an office in every county staffed with extension agents ready to assist in identifying plant or pest issues. Should the agents encounter challenges in diagnosing the problem or if testing services are required, they promptly forward the sample to PDL for further analysis.

Find the NDSU Extension county office closest to you