The UK Plant Disease Diagnostic Laboratory (PDDL) is an educational resource for Kentucky county Extension agents as they assist their clients in diagnosis and management of plant diseases.  There are two branches of the PDDL, one on the main campus in Lexington and the other at the UK Research and Education Center in Princeton, KY. 


Diagnostician with county agent

Submitting Samples

To UK Plant Disease Diagnostic Labs

Kentucky residents who wish to submit plant samples for diagnosis should do so through their local County Extension Office.  Contact them for information on sample preparation and submission.  The UK Extension publication Submitting Plant Specimens for Disease Diagnosis [PPFS-GEN-09] provides additional tips on how to collect and package plant samples for diagnosis. 

Agricultural diagnostic services guide

A guide to where to send samples for various agricultural diagnostic services can be found here.  

For County Extension personnel only

The following information is available here [Login] 

  • Plant Disease Identification Forms
  • Guidelines for Hemp Sample Submission to the Plant Disease Diagnostic Labs