Welcome to MAC-ISA
Who We Are
“Promoting Safety and Science in Tree Care”
The MAC-ISA is a non-profit professional organization of arborists, urban foresters, and others involved in the caring of trees.Our membership is made up of people from commercial, utility municipal sectors, educational institutions and other green industry related fields.Our mission is to promote a culture of safety while fostering education and research that supports the care and benefits of trees. Our chapter area includes District of Columbia, Maryland, Virginia and West Virginia.
News and Events
- Registration for the June 8th MAC-ISA Day of Safety is filling up fast! Click here for more information and a downloadable registration form. Click here to register on-line.
- Nominate someone for the new Field Arborist Award to be announced at our Annual Meeting. More information available here. Click this link to nominate someone.
- Click here for the overall mens and womens champions of our recent Tree Climbing Championship in Richmond. Click here for more information. On another note:

MAC-ISA climbers ruled the North American Tree Climbing Championship that was held this past weekend in NJ. They won the Team Award for the team with the most points and all of our climbers participated in the Masters Challenge. The Masters results were as follows: Jocelyn Lohse came in 2nd in the women's competition and in the men's - James Earhart 3rd, Thomas Whitelock, 4th and Chris Coates, 5th. The full results should be posted on the ITCC site soon. We also had some members judging. Way to go MAC-ISA.
- Click here for information about the Frank Santamour Scholarship and click here for an application form. Click here for information and an application for the Annual Meeting Student Scholarship.
- The June MAC-ISA Arborist Certification Course is now full. If you want to obtain 8 CEUs and register for one day (June 13th) click here for a registration form. Click here for more information and to register for any of the other certification courses. Earn 24 CEUs. Call the office if you would just like to attend 1 or 2 days and earn CEUs.
- Join MAC-ISA and/or ISA. Become a member today. Click here for information and to become a member.
- Click on these links to ISA information about cleanup of storm damage. Suggestions for hiring tree services after a storm can be found here. Be safe! Do not clean up near downed power lines. Contact a certified arborist to help you with clean up. To hire a certified arborist in the Mid-Atlantic go to www.goodtreecare.com.
- Click Here for our new credit card privacy and refund policy
Order from the new ISA Web Store!
Apply for MAC-ISA membership and pay dues online!
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