For diagnosis of disease-related issues of small grain crops, corn, sorghum, cotton, vegetable, other field/row crops, turfgrasses, ornamentals, and trees, please download and complete form PDDF-001 and submit it with your sample(s) to the THPPDD laboratory. Sample submission guidelines can be found on the second page of the form.
Note: For ornamentals and tree samples, please contact the lab at (806)-677-5600 for information on availability of specific diagnostic services. Depending on your location, another resource for diagnosis of diseases of ornamentals and tree samples is the Texas Plant Disease Diagnostic Laboratory located in College Station, Texas.