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This is a single course offering based on the pathology component of a regular OSU class (PLNTPTH/ENTMLGY 5110). It is designed for professionals in the tree care industry—arborists, landscapers, forest managers, and extension educators—as well as curious individuals such as master gardeners and private citizens. The course provides foundational knowledge to recognize major diseases of forest and urban trees and apply pathology principles to new and unknown diseases.

What You’ll Learn

  • Understand the role of tree diseases in forest and urban ecosystems
  • Identify common indigenous and invasive tree diseases in North America
  • Comprehend disease development in various environments
  • Apply integrated pest management principles
  • Assess ecological and economic impacts of tree diseases

What You’ll Earn

  • Certificate of completion upon meeting course requirements

Additional Information

THERE ARE NO START AND END DATES. THAT MEANS THAT YOU CAN START THE COURSE AT ANY TIME OF YOUR CHOOSING AND END IT AT ANY TIME OF YOUR CHOOSING. The material is offered on an extremely flexible, continuous basis as a SELF-PACED, SELF-CONTAINED online course. The course consists of 7 modules roughly equivalent to 7 in-class weeks of instruction.

ISA CEUs: Because this is a self-paced course, you will use the CEU Post-Approval Portal under ISA Quicklinks at the bottom of your ISA dashboard to report your attendance. Please note that you are required to have proof of attendance (the completion certificate should suffice) and supporting documentation of the content and details (title, date, instructor). If you have any questions regarding your ISA dashboard, please contact ISA directly.

Contact Us

For questions about the enrollment process, payment options, technology, or course records, please submit an inquiry and our Enrollment Support team will assist you within 24 hours during business days.

Submit an enrollment inquiry

For questions about course details email bonello.2@osu.edu.

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Enroll Now - Select a section to enroll in
Section Title
Forest and Urban Tree Pathology and Disease Management for Practitioners and Curious People
Type
Online
Dates
Aug 06, 2025 to Jun 30, 2026
Course Fee(s)
Course Fee $110.00
Drop Request Deadline
No drop request allowed after enrollment
Transfer Request Deadline
No transfer request allowed after enrollment
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