Sentinel Tree was founded in 2026 by Ryan Jones. Ryan has worked in the public sector for nearly 20 years in Park operations, Arboriculture, and Urban Forestry. He has been employed by many organizations including the National Park Service, Maryland National Capital Park and Planning Commission- Montgomery Parks, and City of Frederick Parks. He completed the Olmsted Center for Landscape Preservation Arborist Training Program in Boston Massachusetts in 2011. He is a TRAQ qualified, ISA Certified Arborist. He has a Bachelor of Science from Frostburg University. He is driven by a passion for working with trees and meaningful work with people.