The Ohio Chapter of the International Society of Arboriculture (Ohio Chapter ISA) is the successor of the Ohio Chapter of the National Shade Tree Conference organized in 1942 and then the Ohio Chapter of the International Shade Tree Conference in 1961. In 1975, the Chapter became the Ohio Chapter International Society of Arboriculture. The Chapter is established in the state of Ohio as a 501(c)3 charitable organization.

Our mission is to advance responsible tree care practices through research, technology and education; while promoting the benefits of trees.

The Ohio Chapter values investing in the future of professional arboriculture through education, research, safety and communication; while maintaining integrity and credibility.  For more information on the Ohio Chapter ISA, visit