Got plant problems? Learn plant diagnostics online

Plant Diagnostics: The Step-by-Step Approach to Identifying Plant Problems is an online course offered by the UW-Madison Division of Extension Horticulture Program. The course is designed to teach you troubleshooting skills for plant related problems. This online course runs from February 1 – April 30, 2024. 

Learn the step-by-step process for identifying plant problems in your gardens. This course explains the basics of the plant diagnostic process in an easy-to-understand way. 

At the end of the course, participants will be able to:

  • Explain the steps of the diagnostic process.
  • Identify appropriate resources to use in the diagnostic process.
  • Learn how to use UW-Madison Division of Extension diagnostic services and labs for extra help when you need it.

The online course is self-paced with 13 modules that include videos, reading, and interactive activities. Two live webinars, “Putting the Process into Practice: Real World Diagnostics”, led by Extension Educators, and “Meet the Labs!”, presented by diagnostic lab directors, are included in the course. Anyone interested in becoming a better gardener and detecting problems as they arise is invited to participate in the course! 

Registration is open through January 2024 and is open to the public.

  • Early Bird registration runs from December 1, 2023-January 21, 2024 at $99 for the general public and commercial professionals.
  • Regular registration runs from January 22-31, 2024 at $109.
  • Special discounted pricing ($49) for active participants in the Wisconsin Extension Master Gardener Program.

Find more information about this course at: 

Master Gardeners: Complete the course by December 31, 2024 for 7.5 hours of continuing education.

ISA Certified Arborists: Complete the course by April 30, 2024 to earn 7.5 CEUs.

Questions? Contact the course moderator: Amy Freidig at 

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