Videos

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Submitting Conifers

Needle drop/tip blight samples: collect 2-3 branches approximately 1.5-2 feet in length showing both symptomatic and healthy needles. Watch our video here Collecting Tip and Needle Blight Samples

Submitting Woody Plants

Mature trees and shrubs problems?

Observe symptoms and patterns, document what you see with pictures while inspecting the plant.

Submitting Vegetables and Annual Ornamental Crops

 leave the plugs in the tray
whole plug trays: leave the plugs in the tray

Observe symptoms and patterns, document what you see with pictures while inspecting the plants (close-up and general distribution in the field, greenhouse, high tunnel etc.).

Field Crops

General Tips When Scouting and Sampling Agricultural Crops

2018 Morel Mushroom Certification Workshop Dates Announced

To see all details of the morel certification workshop this year, but also future updates, visit the morel certification page at http://bit.ly/morel-cert

morel certification workshops on the Iowa State University campus
Morel certification workshops on the Iowa State University campus

Plant Nematode Sample Submission

The PIDC provides soybean cyst nematode egg counts, information about thresholds and rotation information.  We also provide complete nematode counts for corn, turf, and other grassy plants.  

If your sample is from outside of Iowa do not submit it without contacting us we have strict limitations on soil movement.

Form and fee, do not send payment with your sample.  You will receive a statement from Iowa State University.

Submitting a Mushroom for Identification

We are happy to assist in identification of fungi, see our submission form and guidelines at PIDC 45 - Sample Submission Form, (fee is $10 for sample originating in Iowa). If your sample is from outside of Iowa, please do not submit without contacting us

To identify mushrooms, we need a physical sample accompanied by digital pictures.

Clinic Services and Information

Plant and Insect Diagnostic Clinic staff diagnose plant health problems, identify insects, plants/weeds, and fungi. Please follow links below for detailed information about our services and how to submit samples.

Services, forms, and fees* for Iowa residents.

Do not send money with your sample, you will receive a statement from ISU after your diagnosis is complete.

BugGuide Needs Your Help!

Please consider supporting BugGuide.net. Your donations will help us fund a staff member that can work on development and a half-time staff member working on collaboration with other projects and agencies like iNaturalist and LepSnap and the Nature Conservancy and the Xerces Society and USGS and others.

It Was a Very Good Year for Painted Lady Butterflies


Painted lady butterflies at Reiman Gardens

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