Submitting Plant Samples
Fill out the Plant Diagnostic Form and provide as much information about the plant and site conditions as you can.
Include photographs if available.
Provide a plant sample showing a range of symptoms that accurately represents the problem. Dead leaves, plants or dead branches no longer contain the source of the problem .
If submitting a weed or wildflower include the whole plant including roots.
Approximately a 4 x 4 inch section that shows both healthy and diseased grass is recommended.
Herbaceous Plants i.e. annuals, most perennials and vegetables
Submit the whole plant including roots. Otherwise include plant sections that exhibit symptoms.
Trees and Shrubs
Photo by USDA Forest Service - North Central Research Station Archive. http://www.bugwood.org
Last updated July 26, 2019