ISA and The Davey Tree Expert Company continue OneTree Partnership

ATLANTA, Ga. — ISA is pleased to announce that The Davey Tree Expert Company, the first and  largest tree care company in North America, will continue to provide support through ISA’s OneTree Program as a distinguished partner.

The OneTree Program is ISA’s corporate sponsorship program designed to bring together companies dedicated to improving the community by promoting the professional practice of arboriculture. OneTree partners provide both financial and non-financial support that allows ISA to advance its mission to foster a greater worldwide awareness of the benefits of trees.

“We appreciate Davey Tree’s commitment to investing in our industry by maintaining their OneTree sponsorship,” said Caitlyn Pollihan, the executive director and CEO of ISA. “With their support, ISA can continue to have a global impact by supporting arborists and tree workers who in turn help trees and the community.”

Established in 1880, Davey Tree is the 8th-largest employee-owned company in the U.S., and provides services to homeowners, small and large businesses, public utilities, and local, state, and federal agencies through its arboriculture, horticulture, and environmental and consulting services.

Sandra Reid, vice president of corporate communications and strategic planning, said Davey is proud of its affiliation with ISA. “Through the OneTree sponsorship, we are able to engage with students as part of our partnership,” Reid said.  “We are especially grateful for this opportunity to shape the next generation of leaders, in addition to helping ISA with its overall mission.”

Through its OneTree relationships, ISA is able to provide arborists with programming, services, and research to better equip them to serve and educate the greater public, and advance the profession as well as the tree care industry worldwide. Additionally, the OneTree program helps to address critical environmental issues, impact decision and policy makers, spread valuable education and research while also staying on the cutting edge of industry trends, innovation and technology.

For more information about the ISA OneTree Program visit the ISA sponsorship program page or contact For information on The Davey Tree Expert Company, please visit their website.

ABOUT ISA          

The International Society of Arboriculture (ISA), headquartered in Atlanta, Ga., U.S., is a nonprofit professional organization dedicated to promoting the importance of arboriculture and educating the public about the significance of trees and the value of their proper care. As part of ISA’s advancing the arboriculture profession, it offers the only internationally‐recognized certification program in the industry, including ISA Certified Arborist ®. For more information about ISA and Certified Arborists, visit


The Davey Tree Expert Company provides research-driven tree services, grounds maintenance and environmental consulting for residentialutilitycommercial and environmental partners in the U.S. and Canada. Established in 1880 and headquartered in Kent, Ohio, Davey Tree is in the top 10 largest employee-owned companies in the U.S. and has more than 10,000 employees who are driven to create and deliver sustainable solutions. Discover your Davey career and apply today.

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