In early 2026, Penn State Extension will offer the Arborist Short Course, a series of 10 webinars intended to strengthen arborist skills with training in tree biology, care and risk management while preparing participants for the International Society of Arboriculture certified arborist exam. The webinars will take place 9 a.m.-noon Jan. 6, 8, 13, 15, 20, 23, 28 and 30 and Feb. 4 and 6, 2026.

There is a cost.

The training is aimed at arborists and tree workers, landscape contractors, municipal workers, landscape architects and park and grounds maintenance staff but is open to all who wish to attend. Participants can attend the live online webinars or view recorded lectures.

Instructors note International Society of Arboriculture certification will improve an arborist’s marketability because it designates a level of professionalism.

Instructors will discuss tree biology; tree planting and establishment; tree identification and selection; tree pruning; protecting trees during construction; cabling, bracing and lightning protection; tree insect and disease diagnosis and management; soils, water relations and tree nutrition; and urban forest management.

Organizers recommend participants obtain the arborists’ certification study guide for the course, especially if planning to take the ISA-certified arborist exam.

Participants must register for the series by midnight Jan. 3, 2026.

The registration fee includes live webinars as well as access to lecture recordings and downloadable resources and references on all covered topics.

Thirty ISA continuing education units are available for those who view the sessions, live or recorded, and complete the quizzes with a passing score.

Participants also can earn certificates of attendance for completion of the course.

For additional information, visit the Penn State Extension website at extension.psu.edu/arborist-short-course-series.