• Gardening Assistance
  Master Gardener Plant Pest & Disease Diagnostic Desk
  📞 (385) 468-4828 | ✉️ mastergardener@usu.edu

  The Diagnostic Desk is staffed by Master Gardener volunteers and horticulture staff from April through September. From October through March, inquiries are handled by horticulture staff.

  • Walk-in service (Oct–Mar) is available when staff are present or by appointment. To schedule, call Main Reception at (385) 468-4820.

  • Phone calls may go to voicemail during busy periods.

  • Email and voicemail inquiries are typically answered within 5 business days. Please include high-resolution, in-focus photos (close-ups and wider shots).

  Specimen Drop-Off:

  • Accepted Mon–Fri, 8 AM–5 PM.

  • Initial analysis/ID provided within 5 business days.

  • Packaging requirements:

    • Use sealed bags or containers.

    • Turf: 4"x4"x4", include live green plants, wait 2 days after rain/irrigation.

    • Trees/shrubs: limit to 12" pieces with some living leaves/needles.

  Soil Testing:

  • We do not conduct lab tests but can make basic observations (microscopy if needed).

  • For full analysis, submit samples to the USU Analytical Labs in Logan. We provide free submission kits.
    🔗 https://www.usu.edu/analytical-laboratories

  Pest & Disease Lab Submissions:

  • For a small fee, you may send samples to the Utah Plant Pest & Disease Lab in Logan.

  • Additional resources and submission links available below.

• Utah Plant Pest Diagnostic Laboratory (UPPDL)| Home Page 
• UPPDL | Insect Sample Collection Instructions
• UPPDL | Plant Disease Sample Collection Instructions 
• UPPDL | Submission Form 

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