International Society of Arboriculture
Through research, technology and education, the ISA promotes the professional practice of arboriculture and fosters a greater worldwide awareness of the benefits of trees. You can also verify the credentials of an ISA Certified Arborist® on this site.
Tree Care Industry Association
Established in 1938 as the National Arborist Association, today’s Tree Care Industry Association (TCIA) is a trade association of more than 2,200 commercial tree care firms and affiliated companies. Their mission is to advance tree care businesses.
American Society of Consulting Arborists
ASCA is the industry’s premier professional association focusing solely on arboricultural consulting. Consulting Arborists are authoritative experts on trees. They consult property owners, municipalities, attorneys, insurance professionals and others on tree disease, placement, preservation, and dispute resolution in addition to providing consulting and expert testimony in the legal, insurance, and environmental arenas.
Mid-Atlantic Chapter of ISA
The MAC-ISA is a non-profit professional organization of arborists, urban foresters, and others involved in the caring of trees. Their mission is to promote a culture of safety while fostering education and research that supports the care and benefits of trees. The chapter includes District of Columbia, Maryland, Virginia, and West Virginia.
Trees Virginia
Trees Virginia is a private, non-profit organization whose mission is to enhance the quality of life through Stewardship of our Commonwealth’s urban and community trees. Established in 1990, the organization works to promote an awareness of our community forests and the value of trees.
Vermeer Mid-Atlantic
Streamline Tree Care uses Vermeer brush chippers and stump cutters. Vermeer tree equipment is built for performance and easy daily maintenance and designed with safety features that protect our employees.