Bill Logan
Consulting Arborist
Bill Logan founded Urban Arborists and now operates as a consulting arborist for the company. He teaches pruning and tree identification at the New York Botanical Garden's School of Professional Horticulture. At the Garden, he also teaches a master class in tree care to foresters of the New York City Department of Parks & Recreation. He has lectured at numerous botanical gardens around the country, including the Arnold Arboretum, the Morton Arboretum, and the Huntington Botanical Gardens. He has published four books of natural history - Oak: The Frame of Civilization, Dirt: The Ecstatic Skin of the Earth, Air: The Restless Shaper of the Worldand, most recently, Sprout Lands: Tending the Endless Gift of Trees - all from WW Norton. As writer and contributing editor to House & Garden, House Beautiful and Garden Design, and as a garden columnist for the New York Times, he developed a keen sense of what makes a garden beautiful. He is a sought-after consultant to landscape architects, municipalities, companies and individuals.
Tyler Cook
Lead Arborist
Tyler brings a depth of hands-on experience in both arboriculture and natural area management. He previously worked with the Central Park Conservancy, where he managed 15 acres of natural landscapes including the Ramble, North Woods, and Hallett Nature Sanctuary. An ISA Certified Arborist and TRAQ certified, Tyler is an experienced climber with a strong ability to assess tree health, including fungal-related issues. Since joining Urban Arborists in 2023, he has supported projects at The Metropolitan Museum of Art, Madison Square Park, Battery Park, the Cathedral of St. John the Divine, and NYU.
Wayne Kammerer
Inventory Arborist
Wayne joined Urban Arborists in 2015 as a tree worker after having been a student of Bill Logan’s at NYBG adult continuing education program. He received a certificate in Arboriculture from NYBG. Moving from a career as a bread baker to one in tree work was like a full circle moment: Wayne’s affinity for trees grew out of exploring the woods and pasture at his grandparents’ farm in northern Illinois while growing up. He first came to New York as a member of the Coast Guard serving on a buoy tender stationed on Governor’s Island when the island was a major Coast Guard facility. He earned a BA in English and History from SUNY Geneseo. He became an ISA certified arborist while at Urban Arborists and now focuses on tree inventories.
Crystal Elmore
Arboriculture Project Coordinator
Crystal Elmore brings a background in education, horticulture, and landscape design to her role as Arboriculture Project Coordinator at Urban Arborists. She spent more than a decade as an elementary school teacher and curriculum designer in New York City before transitioning into horticulture and landscape design work. She has worked in garden maintenance and installation, including at Greenbush Gardens in Nyack, and currently works at Chelsea Garden Center, where she assists customers with plant selection, garden design, and plant care. Crystal is currently completing the Landscape Design Certificate at the New York Botanical Garden, where she has developed a particular interest in urban gardens, ecological planting, and the relationship between plants, trees, and the people who care for them. She is especially interested in creating gardens that connect people to the natural world, using native plants and ecological design to create beautiful, inviting spaces that support the health and diversity of the larger urban ecosystem.
Logan Foltz
Arborist
Logan joined the Urban Arborist team in 2026, bringing a breadth of green industry experience. After pivoting from a career in analytical biochemistry, Logan spent time traveling around the country working in orchards, organic farms, and permaculture homesteads, where his passion and understanding of plant life flourished. He eventually brought this experience to New York, where he worked seasonally at the Brooklyn Botanic Garden, learning ecological horticulture from some of the city’s finest gardeners and arborists. Leaving the cold of New York for West Coast sunshine, Logan spent several years in Sothern California, where he apprenticed under an arborist specializing in plant health care (PHC), tree risk assessments, and client consultations. There he earned his ISA certification, Tree Risk Assessment Qualification (TRAQ), and CA pesticide applicator's license (QAL). During his time in California, Logan also worked for a prominent nursery where he was planting trees, pruning orchards, designing landscapes, and conducting health assessments. He is excited for the opportunity to bring his expertise back to New York to preserve the urban canopy of the greatest city in the world.