Free ISA CEUs: Week of January 5th, 2026

The new year brings new opportunities to learn about trees. Consider attending a webinar discussing oyster mushrooms in North American forests.

Wednesday, December 17th

Beyond cultivation: tracking the spread and ecological effects of the golden oyster mushroom @ 11:00am MST

Arboricultural Association Wednesday Webinar Series presents Beyond cultivation: tracking the spread and ecological effects of the golden oyster mushroom with Michelle Jusino. The golden oyster mushroom (Pleurotus citrinopileatus) is a popular edible fungus that has recently emerged as an invasive species in North American forests. Building on recent work published in Current Biology, this talk will summarize evidence that golden oyster mushrooms are spreading rapidly and are associated with reduced native fungal diversity on colonized trees. I will also highlight ongoing efforts to develop molecular tools for detection and monitoring of this species, and discuss future research directions needed to assess ecological impacts and inform management. 

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Forestry Webinars

The Webinar Portal, a product of Southern Regional Extension Forestry (SREF) and winner of the 2011 USDA Forest Service’s Two Chiefs’ Partnership Award, is a “multi discipline” web platform used to promote and deliver live and on-demand virtual events and webinars focused on forestry, agriculture, conservation, climate science and other natural resource disciplines.

Watch Here

TreeStuff Webinars on YouTube

Watch a video and pass the quiz to qualify for free ISA CEUs.

Watch Here

Tree Care Industry Association (TCIA)

Introduction to Arboriculture Safety (1.25 ISA CEUs)

In this program, you will learn about general tree care safety so that you can avoid accidents while working in the field.

Susan Harwood Grant program OSHA Trainings (Up to 5 ISA CEUs)

Remember, you can always ask your local ISA chapter if your event qualifies for CEUs.

If your organization is hosting a free in-person or virtual ISA CEU opportunity, please reach out to so we can share it!

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