We are proud to partner with a sponsor for our webinars. Banner Biologicals has been an outstanding supporter, with Steve Martinko and his team participating in all of our Science Webinars. Their expertise is an invaluable resource, helping arborists address plant health care challenges in real time during each session. Click the logo below to visit the Banner Biologicals website.

RESERVE YOUR SPOT! 
Registration is now open for the following webinars.

winter injury to trees and shrubs webinar

Preventative Measures for ensuring plant Health

Instructors:  Steve Martinko & Jeff Thierbach
2 CEUs

Thursday, October 1, 2026
Noon - 2pm EST

This webinar will help arborists distinguish winter injury from​ plant injury caused by improper cultural practices. It will explore how plants respond to stress and why symptoms may not appear until two to three months after a significant weather event. Participants will learn how to implement effective preventative measures to optimize plant health before harsh winter conditions arrive. The webinar will also address climate change and examine why more plant damage can occur during mild winter seasons than during prolonged cold periods. This class is ideal for those seeking to strengthen their ability to diagnose plant injury accurately.

register now

Arborist training

Instructor:  Jeff Thierbach

-apprenticeship program-
-preperation for the arborist exam-

Preparing for the Arborist Certification Exam or participating in an apprenticeship program? This course is designed for you. It provides a detailed, in-depth review of the Arborist’s Manual, making it an excellent preparation for aspiring and experienced arborists alike. This series will consist of six comprehensive volumes.

Arborist
Training
Bu​ndle

Volumes 1-16

Register Bundle Package

Embark on your arborist training
 journey and save over 44% 
when you purchase all 6 
volumes as a complete set.  
Your journey will start on 
October 2 with Volume 2, 
covering Chapters 4-6 and a transcript of Volume 1 covering Chapters 1-3 (Webinar on August 21). Progress through each volume to master new ​skills and knowledge.

27 Hours / 27 CEU
$450 
That's a $360 savings!

All webinars will be held from 12:00 PM to 5:00 PM (Eastern Time) 

 Register Bundle Package

Volume 1 

Transcript

Chapters 1-3

Included in bundle package.

Volume 2 

$135

October 2, 2026

12:00 PM to 5:00 PM
(Eastern Time) 

4.5 Hours / 4.5 CEU

Chapters 4-6

register Volume 2

Volume 3 

$135

October 9, 2026

12:00 PM to 5:00 PM
(Eastern Time) 

4.5 Hours / 4.5 CEU

Chapters 7-9

register volume 3

Volume 4 

$135

October 16, 2026

12:00 PM to 5:00 PM
(Eastern Time) 

4.5 Hours / 4.5 CEU

Chapters 10-11

register volume 4

Volume 5 

$135

October 23, 2026

12:00 PM to 5:00 PM
(Eastern Time) 

4.5 Hours / 4.5 CEU

Chapters 12-13

register volume 5

Volume 6 

$135

October 30, 2026

12:00 PM to 5:00 PM
(Eastern Time) 

4.5 Hours / 4.5 CEU

Chapters 14-16

register volume 6