Native Portlanders James Unger and Andy Brown met in 2015 climbing trees, of course. Bonding over their love of nature and music, they built on their shared values and strong work ethic and formed MOSSY TREE CARE in 2018. With over 20 years of combined experience MOSSY is fully licensed, bonded, and insured, providing meaningful care, quality and integrity for optimum tree health and the well-being of your property.

James runs the business side of things in addition to being actively involved with the the Audubon Society of Portland & Columbia Land Trust’s Backyard Habitat Certification Program, Portland Parks & Recreation’s Tree Inventory Project, Friends of Trees and The City Repair Project. When not climbing trees he enjoys learning about native plants, building projects and spending time with his partner and two children.

Andy runs the field operations and has been leading crews for over 15 years. Task-master, arborist, artist, tree-whisperer, musician; Andy combines natural leadership with a magical attunement to the trees. When not climbing trees he enjoys spending time with his daughter, living well and all things creative, playing music and building projects.


Business license No. 017608929
Bond No. 63507834, insured through Farmers Insurance Company, (503) 667-2818, CNT019671
Construction Contractors Board, State of Oregon Registration No. 219131
ISA Certified Arborist Zachary Nelsen, RM-7879A