Turfgrass Disease Diagnosis Laboratory 

Located at the Lewis-Brown Horticulture Research Farm, the OSU Turfgrass Disease Diagnostic Laboratory provides quick and accurate diagnostic information and management recommendations for turfgrass problems.  Our lab supports golf courses, commercial turfgrass managers, and homeowners.

Diagnostic Services
  • Visual diagnosis
  • Microscopic examination
  • Pathogen culturing
  • Disease management recommendations
  • Diagnostic results via phone or email
  • Full diagnostic report available for additional fee


How to sample:
Packing & Mailing:
Submission Information

Diagnostic Sample Submission Form - please provide as much information on the form as possible, the more you provide, the better the diagnosis will be

About Us

Ruying (Wrennie) Wang, Ph.D, Postdoctoral Scholar: 
Contact Wrennie


Emily Braithwaite, Faculty Research Assistant: 
Emily is a Faculty Research Assistant at Oregon State University.  She graduated from Rutgers University in 2016 with a degree in Turfgrass Management.  During her time at Rutgers, she assisted with anthracnose and dollar spot work, as well as fungicide efficacy trials.  In 2017, she moved to Oregon and joined the turfgrass group at OSU.  She now works on anthracnose and Microdochium patch, as well as IPM for Oregon schools, and other turfgrass management trials.  Emily also manages the @osubeaverturf Twitter account.
Contact Emily

Contact Us
Lewis-Brown Horticulture Research Farm - OSU Turf Diagnostic Lab

33329 Peoria Rd
Corvallis, OR 97333

Office Hours:

Mon-Fri: 8:00am-4:30pm



Turfgrass Samples (invoiced by OSU)
$100 Disease diagnosis and consultation via email or phone call

Disease diagnosis with full report (includes cultural and chemical management recommendations)