Become a Member
Your membership pays itself back through discounts on products, access to exclusive resources, and educational opportunities.Become a Member
Attend an Event
We promote safety in all that we do. MAC-ISA provides a huge array of educational events. Click below to view all the upcoming events.Register Online
Become Certified
Want to become a Certified Arborist or Tree Worker? Find out which of the ISA certification credentials best meet your needs.Become Certified
Who We Are
The MAC-ISA is a trade association for arborists, urban foresters, and others involved in the caring of trees. Our mission is "to promote a culture of safety while fostering education and research that supports the care and benefits of trees." The chapter area includes District of Columbia, Maryland, Virginia and West Virginia.
Upcoming Events
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Day of Safety 2021
August 14, 2021
VT Hampton Roads AREC -
ISA Tree Risk Assessment Qualification (TRAQ 3 Day Course) Thurmont, MD
August 24, 2021
Catoctin Mountain Park -
MAC-ISA 2021 Annual Meeting
October 03, 2021
Holiday Inn Inn Solomons -Conf Center & Marina -
ISA Tree Risk Assessment Qualification (TRAQ 3 Day Course) Gainesville VA
November 02, 2021
Wetlands Studies and Solutions -
2021 Arborist Certification Course (3 Day Course) Dec 7-9 Derwood, MD
December 07, 2021
Agricultural History Farm Park
News & Announcements
Annual Meeting
Save the date for our Annual Meeting, October 3-5 in Solomons, MD. More info available soon!
Industry Resources during the COVID-19 Crisis
Our events calendar will be kept updated if other cancellations or postponements are made. The MAC-ISA staff is working remotely with the full capabilities of supporting our members. Read more.
2021 Events
Our 2021 Tree Climbing Championship was held June 5th at Morven Park in Leesburg. Click here for the 2021 MAC-ISA Tree Climbing Championship results. Click here for other upcoming events.
Registration Open for Many Events
Registration is available for our Certification courses and TRAQ courses and TRAQ renewal courses.
Bonnie Appleton Memorial Fund Update
We have REACHED OUR initial FUNDRAISING GOAL OF $100,000 to endow this scholarship! Thanks to all who contributed. Scholarship applications are now accepted by the TREE Fund. https://www.treefund.org/scholarships. We will continue to fundraise to increase the amount of future scholarships. Please donate. Read more on the Tree Fund page under the Bonnie Appleton Fund section.
Safety Tips
Helmet Safety
Always wear a helmet with your chin strap buckled.Risk Assessment
Perform a level 2 risk assessment before your climb.Climbing Safety
Always stay on rope.
Utility Lines
Assume that all utility lines are energized.Stay Alert
Stay alert at all times.Protect Crew & Public
Establish a clear work zone and drop zone.PPE Safety
Inspect and clean your PPE regularly.Emergency Response Plan
Establish an emergency response plan prior to work.Check Before Working
Check your equipment, surroundings and yourself prior to everyone's job. Maintain the 4 A's
Maintain the 4 A's: Attitude-Awareness-Action-AccountabilityCommand & Response
Use command and response.Report Unsafe Behavior
Do not accept unsafe behavior (if you see something, say something).Attend An Event
We promote safety in all that we do. MAC-ISA provides a huge array of educational events. Register for one of our events today!
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Annual Meeting Two-day event usually held in October.
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Tree Climbing Championship Chapter members showcase their climbing skills.
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Certification Courses Three-day course to become ISA Certified Arborists.
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Tree Risk Assessment (TRAQ) Consists of a 2-day educational course followed by a ½ day assessment
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Day of Safety To promote a culture of safety while fostering education.
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Tree Fund Events MAC-ISA partners with the Tree Fund.
