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Welcome to the Plant Diagnostic Clinic

The Plant Diagnostic Clinic is back to work! The PDC team is glad to be back and eager to help! We continue to follow CSU safety guidelines that minimize the risk of COVID-19 to our staff and students.

Have a plant or insect question or problem?

For plant or arthropod identification or plant disease diagnosis, contact us at or call the clinic at (970) 491-6950. We are still working remotely as much as possible, but are checking email and phone messages regularly.

Want to send a sample?

Check our “Submit a Sample” page and follow sample collection and mailing guidelines. Campus remains closed to visitors and non-essential personnel so please send your sample by mail when possible.

Fee Price Change

As of May 12, 2022, there will be a $15 fee for insect and arthropod identification. The fee will apply for both physical and digital image samples.

The Plant Diagnostic Clinic offers plant disease diagnosis, agricultural insect identification, plant identification, and provides recommendations for the client. We are the Colorado state lab in the National Plant Diagnostic Network. If you’re having any problems with your plants, let us help!

Submit a Sample

For a list of services we offer and detailed instructions on how to submit your sample

Location and Mailing

Click below for the location of the Plant Sciences building and mailing address.

Contact Information

The Plant Doctors at CSU’s Plant Diagnostics Clinic are happy to answer any questions you may have so please don’t hesitate to contact us!

Clinic Director: Ana Cristina Fulladolsa, Ph.D.
Voice: (970) 491-6950
Fax: (970) 491-3862

Meet the Team

Interested in learning more about who will be diagnosing your plants?

    Our Favorites

Potato virus Y (PVY)

  • One of the most economically important pathogens of potato
  • Numerous strains which cause a variety of symptoms including leaf mottling and crinkling, stunting, veinal necrosis, and tuber necrosis
  • Has a very broad host range – capable of infecting plants in many different families
  • Spread by the planting of infected tubers and through aphid transmission
  • Can be spread from plant to plant in seconds to minutes by many species of aphids, with the green peach aphid (Myzus persicae) generally considered the most effective
  • Some important management strategies include: planting of clean seed; use of resistant potato varieties; use of mineral oils to interfere with aphid transmission; use of early planting and vine kill dates to avoid late season spread from high aphid populations

Prepared by Jacob Pitt (2020)


The Oklahoma Brown tarantula – Aphonopelma hentzi

  • Found in the grassland areas of southern CO, especially in the La Junta area.
  • Males live to be about 8 years, while females can live for over 20 years. Once males mature, they all move about in the fall looking to mate with females, this is usually covered by media as a tarantula migration.
  • A female tarantula will dig a burrow and live in it for decades, while males die shortly after reaching maturity.
  • This species of tarantula are ambush predators; they use their webs to line their burrows and set trip lines out in front of the burrow’s entrance. When they’re hungry, they will lurk in the entrance and wait for the trip lines to vibrate before grabbing whatever is in front of the burrow. This is usually beetles, grasshoppers, and other spiders.
  • A female will lay her eggs in a special ball made of silk called an egg case; a healthy female can have 1,000 babies per egg case and will lay one about every other year. Out of all those babies, only one or two will survive to adulthood.
  • A great place to learn more about this species is through the Deep Look episode on this species, filmed at the CSU Bug Zoo, or through the Agricultural Biology fact sheet

Prepared by Maia Holmes (2020)

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