Submit a Sample

How to Submit a Sample

Submitting a sample

Samples can be dropped off or mailed to ISU Plant & Insect Diagnostic Clinic. All samples must be accompanied by a sample submission form. We suggest to avoid mailing samples on Thursdays or Fridays to prevent packages from sitting in the mail over the weekend, which can impact sample quality. Photos accompanying plant samples are encouraged and can be sent to pidc@iastate.edu

Dropping off a sample? Deliver the sample to the ISU Plant & Insect Diagnostic Clinic between 8 a.m. and 4 p.m. Monday through Friday.

REMINDER: We do not do herbicide residue testing or soil/plant nutrient analyses. 

Mail or deliver samples to: 

ISU Plant & Insect Diagnostic Clinic
2445 ATRB
2213 Pammel Dr. 
Ames, IA 50011

Tips for sample packaging and submission (plant tissue)

How to take photos of plant problems

Select your sample type

Tips for sample packaging and submission 

  • Print and fill out a sample submission form completely.
  • Send any photos to accompany sample to pidc@iastate.edu or print and include with submission form. Photos showing tree location, whole plant appearance, close ups of twigs, trunks, and any cracks or cankers on the trunk or plant are helpful. 
    Tips for taking photos of plant problems
  • Place the sample either directly into a box or into a plastic bag and then into a box. 
  • Whole plant sample: bag the roots separately from the above-ground plant tissue to avoid soil contamination of the above-ground plant tissue. Secure with rubber band or zip ties.
  • Place bagged sample in a box for drop off or mailing.
  • Put the sample submission form in the box.
  • DO NOT add water or excess moisture to the sample.
  • Dropoff: deliver to the ISU Plant & Insect Diagnostic Clinic between 8 a.m. and 4 p.m. Monday through Friday. 
  • If mailing the sample, avoid sending the sample on a Thursday or Friday to prevent the sample from sitting in the mail over the weekend.
  • Do not send payment with your sample. You will receive a statement from Iowa State University after you receive a diagnostic report from the PIDC.