Sending a sample for Diagnosis:

The accuracy of the disease diagnosis is directly related to the quality of a plant sample submitted for diagnosis. The following are general guidelines for collecting and submitting a sample for disease diagnosis.

  •  Provide freshly collected specimens that represent the range of symptoms that you
  •  Provide as much plant material as possible, including roots, top growth and fruit.
  •  Do not send dead plant material. Plants material that is already dead can’t be diagnosed.
  •  Provide lots of information about the sample, such as plant variety, history of the problem, recent pesticide applications and the number of plants affected.
  •  When mailing samples:
    •  For entire plant samples, bag (plastic) the roots and seal at the soil line with a twist tie or a rubber band. Do not cut the root ball off the above-ground plant parts.
    • Cover the top plant growth with a second plastic bag.
    •  For leaf or stem tissue, place the sample in a zip-seal bag as soon as it is collected.
    • Do not use paper bags.
    • Separate fruit (i.e. berries, apples, peaches) samples from roots and top growth material. Place fruit in a zip-seal bag as soon as it is collected.
    • Mail sample in a sturdy container. Entire plant samples should be enclosed in boxes or other crush-proof packaging.
    • Only send samples by overnight delivery. Samples should be mailed Monday through Wednesdays.

Send samples to:

Fruit Pathology Laboratory
Dr. Melanie Lewis Ivey
1680 Madison Avenue
229 Selby Hall
Wooster, OH, 44691


Apple tree shoot submitted for diagnosis. The sample was kept in a bag with a damp paper towel and shipped immediately.

Plant Sample Submission Form – Please fill out this form and attach it with your sample. This allows us to better understand the growing conditions, treatment, and potential influences of diesease that may be affecting your diseased plants.