Who We Are

ISA is the premier tree care organization in the world. As an international organization, our goal is to provide you with the best services and programs at both the international and local levels. Being an organization that understands the needs of the industry at the global level is important to us, but sometimes you want to consult with someone who understands the specific concerns of your region.

This is where ISA chapters and associate organizations play a critical role. When you join both ISA and your local ISA chapter/associate organization, you receive information about trends and issues within the profession from around the globe, as well as a network of colleagues and resources tailored to your local needs. Regional memberships support local programs, regional tree climbing competitions, and much more.

Choose Your Local ISA Chapter or Associate Organization

You can choose to join any of the following ISA chapters or associate organizations.

Location Name Status
Lithuania Lithuanian Arborists Association Associate Organization
Thailand Thai Arboriculture Association Associate Organization
Australia Arboriculture Australia Associate Organization
Australia-Queensland Queensland Arboricultural Association Inc. Associate Organization
Austria ISA Austria Chapter Chapter
Belgium Belgian Arborist Association Associate Organization
Brazil Sociedade Brasileira de Arborizacao Urbana Chapter
Canada (Ontario) ISA Ontario Chapter Chapter
Canada (Quebec) la Société internationale d’arboriculture Chapter
Canada-Atlantic (New Brunswick, Nova Scotia, Prince Edward Island, & Newfoundland) ISA Atlantic Chapter Chapter
Canada-Prairie (Alberta, Manitoba, Saskatchewan) ISA Prairie Chapter Chapter
Chile Sociedad Chilena de Arboricultura Associate Organization
Colombia Asociación Colombiana de Arboricultura Chapter
Croatia Hrvatska udruga za arborikulturu (HUA) Associate Organization
Czech Republic Sekce péče o dřeviny Chapter
Denmark/Iceland Dansk Træplejeforening Chapter
Estonia Eesti Arboristide Ühing or Estonian Arboricultural Society Associate Organization
Finland Suomen Puunhoidon Yhdistys ry Associate Organization
France Société Française d'Arboriculture Associate Organization
Germany ISA Germany Chapter Chapter
Hong Kong ISA Hong Kong Chapter Chapter
Italy Società Italiana di Arboricoltura Chapter
Japan Japan Arborists Association Associate Organization
Latvia Latvijas Kokkopju Arboristu Biedrība Associate Organization
Lithuania Lithuanian Arboricultural Center Associate Organization
Malaysia Malaysian Society of Arboriculture Associate Organization
Mexico Asociación Mexicana de Arboricultura Chapter
Netherlands (Dutch) Kring Praktiserende Boomverzorgers Chapter
New Zealand New Zealand Arboricultural Association Chapter
Norway Norsk Trepleieforum Chapter
Poland Federacja Arborystów Polskich Associate Organization
Singapore Singapore Arboriculture Society (SAS) Associate Organization
Slovak Republic ISA Slovensko - Slovak Republic Associate Organization
Spain La Asociación Española de Arboricultura Chapter
Sweden Svenska Trädföreningens Chapter
Switzerland Bund Schweizer Baumpflege Associate Organization
Taiwan Taiwan Arboriculture Society Associate Organization
United Kingdom/Ireland The Arboricultural Association Associate Organization
United States-Dakotas (North and South Dakota) Dakotas ISA Associate Organization
United States-Florida ISA Florida Chapter Chapter
United States-Georgia Georgia Arborist Association Associate Organization
United States-Illinois Illinois Arborist Association Chapter
以下联合省提高:印第安纳州 Indiana Arborist Association Chapter
United States-Iowa Iowa Arborist Association Chapter
United States-Kentucky Kentucky Arborists Association Chapter
United States-Michigan ISA Michigan Chapter
United States-Mid Atlantic (Washington, D.C., Maryland, Virginia, & West Virginia) Mid-Atlantic Chapter ISA Chapter
联合States-Midwest(堪萨斯州、密苏里州、内布拉斯加州 & Oklahoma) Midwestern Chapter ISA Chapter
United States-Minnesota Minnesota Society of Arboriculture Chapter
United States-New England (Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont) New England Chapter ISA Chapter
United States-New Jersey New Jersey Arborists Chapter
United States-New York The New York State Arborists Chapter
United States-Ohio Ohio Chapter ISA Chapter
United States/Canada-Pacific NW (Alaska, Idaho, Oregon, Washington, British Columbia) Pacific Northwest ISA Chapter
United States-Pennsylvania and Delaware Penn-Del Chapter ISA Chapter
United States-Rocky Mountain (Colorado, Montana, New Mexico, & Wyoming) ISA Rocky Mountain Chapter Chapter
United States-Southern (Alabama, Arkansas, Louisiana, Mississippi, North Carolina, Puerto Rico, South Carolina, Tennessee, Virgin Islands) Southern Chapter ISA Chapter
United States-Texas ISA Texas Chapter
United States-Utah Utah Community Forestry Council Chapter
United States-Western (Arizona, California, Hawaii, & Nevada) Western Chapter ISA Chapter
United States-Wisconsin Wisconsin Arborist Association Chapter
Peru Asociación Peruana de Arboricultura y Forestería Urbana (APA) Associate Organization
Costa Rica Asociación Costarricense de Arboricultura Associate Organization

Professional Affiliates are member organizations that aim to supplement your ISA membership with resources and networks geared specifically toward your area of practice. The Professional Affiliates below outline available opportunities for specialized activities.

Arboricultural Research and Education Academy

Arboricultural Research and Education Academy (AREA) members are scientists and educators in all tree-related disciplines working toward the scientific understanding of woody plants and their care.

  • Supports efforts of faculty, students, and researchers
  • Coordinates the educational program at the ISA Annual Conference

Society of Commercial Arboriculture

Society of Commercial Arboriculture (SCA) members are concerned with establishing and sustaining long-range programs such as management, business trends, certification, legal issues, safety standards, compliance, equipment evaluation, job costing, and tree evaluation.

  • Publishes quarterly newsletter, SCAToday
  • Creates a network of leading commercial arborists throughout the world
  • Hosts annual meeting devoted exclusively to topics of concern
  • Supports the International Tree Climbing Championship
  • Supports the Tree Dynamics and Arborists’ Techniques Fund
  • Helps support college scholarships and tree care-related research

Society of Municipal Arborists

Society of Municipal Arborists (SMA) is an organization of persons actively engaged in municipal arboriculture or in related fields and who care for community trees.

  • Holds its own annual meeting, conference, and trade show
  • Holds a one-day workshop/tour at the annual ISA international conference
  • Offers a forestry department accreditation, the "gold standard" for municipal tree care programs
  • Offers a week-long leadership institute designed to increase effectiveness personally, professionally, and programmatically
  • Provides peer-to-peer learning through member e-lists, forums, and social media pages
  • Offers world-wide Arborist Exchange program
  • Provides electronic "City Trees" magazine, 40 pages full of municipal information

Utility Arborist Association

Utility Arborist Association (UAA) sustains long-range programs and communications regarding the technologies and methods of tree and vegetation management as they affect utilities.

  • Publishes Utility Arborist Newsline six times a year
  • Holds an UAA Annual Meeting
  • Sponsors regional workshops
  • Funds an annual UAA scholarship
  • Promotes UAA annual awards programs
  • Produces UAA publication and videos

ISA is connected to other related organizations in the green industry. Explore more ways to make a difference in your community.

Cooperative Organizations

Topical Resources

Professional Resources

Green Organizations and Programs

Arboricultural Education

ISA Canopy Partners

Canopy Partners Program logo

Promoting the profession by investing in the industry worldwide.

ISA established the ISA Canopy Partner program to create a collaborative initiative

that brings together industry leaders to support the work ISA does to promote the professional practice of arboriculture, inform the public about the benefits of trees and provide the only global network of arborists, urban foresters and people who care for and about trees.

The ISA Canopy Partner program will ensure the important work we do to support the consumer outreach for arboriculture, as well as, the work that ISA does on behalf of the entire profession continues to make an impact across the industry and around the world.

ISA Canopy Partners help ISA: 

  • Advance the profession and the tree care industry worldwide.
  • Provide members and credential holders with programming, services, and research to better equip them to serve and educate the greater public.
  • Address critical environmental issues and impact decision and policy makers.
  • Spread valuable education and research.

Find out how you can be a part of ISA’s global network at the events level by contacting CorporateSales@meishitravel.com or +1 678.367.0981 ext. 212.

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