Trees. Data. Action

We help tree managers make better decisions by aligning maintenance priorities, budget planning, and long-term canopy goals into a single, workable strategy.

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An aerial view of a park with green grass, trees, and winding dirt paths.

Qualifications and Certifications

Certificate from The International Society of Arboriculture confirming Russell Clark as an ISA Board Certified Master Arborist.
Logo of the Society of American Forests with a shield containing illustrated green trees and the letters SAF in the center for Certified Urban and Community Forester.
Certification document from the International Society of Arboriculture awarding the ISA Tree Risk Assessment Qualification to Russell Clark, signed by Caitlyn Pollihan, with issue date April 8, 2026, and expiration date April 8, 2033.
Certificate from the State of Connecticut Department of Energy & Environmental Protection Pesticide Management Program certifying Russell Clark as a Pesticide Supervisor, effective from June 30, 2026, to January 31, 2031, signed by Katie Dykes, Commissioner.

Our customers

Seal for the Town of Fairhaven, MA, featuring a drawing of Town Hall with a prominent tower, and text indicating incorporation date of February 29, 1812.
Seal of the City of Gloucester featuring a sailing ship and the text 'City of Gloucester Incorporated 1873'
A green maple leaf logo with a black background, encircled by a green ring, and the text 'NYC Parks' beneath it.
Seal of the Town of Ashland, Massachusetts, featuring a clock, a building, trees, water, and a mountain.

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Provide project details and we will get back to you with information regarding your project.

NOTE: Excelsior Urban Forestry is currently only working with municipal, commercial and engineering companies at this time. If you are a private homeowner, please consider another option. Thank you!