Meet Our Staff


Erik Dihle is Baltimore’s City Arborist and Chief of Urban Forestry.  After a long federal career with the Departments of Agriculture and Army, he’s taking on the challenge of increasing Baltimore’s tree canopy, “by whatever means necessary!”  He is heartened by city residents’ and business leaders’ passion not only for planting more trees, but for giving the best care possible to our senior citizens (Senior citizen trees, that is).  Erik grew up on the west coast, and predicts we’ll be planting California palms if our warming trend continues!


Charles Murphy is the head of operations at TreeBaltimore and has worked with the program since it became operational in 2009. Baltimore bred, West Virginia grad. Forestry degree + city boy = urban forestry! His life passion is showing city residents they don’t need to leave the beltway to find a living, breathing, green oasis. He loves, and lives, the mantra of ‘one tree at a time.’ Charlie and his pup Ashby spend most of their time backpacking the mountains, exploring local parks, or planning the next big trek in some far-off, distant land. You can catch that at any ‘Bring Your Dog to the Yard Day,’ Go O’s!


Ted Martello oversees the nursery at TreeBaltimore and helps coordinate community tree planting and tree care events throughout the city. After completing a forestry and recreation degree at Virginia Polytechnic Institute in 2007, Ted gained valuable experience working with the United States Forest Service and the Appalachian Trail Conservancy. The trail name “T-Mello” came about while thru-hiking the entire Appalachian Trail from Maine to Georgia in 2011. He’s proud to be back in his hometown working to expand the tree canopy with TreeBaltimore.


Ashley (Dickerson) Bowers is the Integrated Vegetation Management Specialist for Baltimore City. She oversees the Weed Warriors program and facilitates forest conservation projects in the City’s natural areas. Ashley has studied, taught, and researched in the fields of Environmental Science and Urban Ecology since 2007. She is thrilled to be part of a team supporting the health and well-being of Baltimore City and looks forward to working with you!


Nathan Randolph is the Street Tree Inventory GIS Specialist for the city of Baltimore. He plays a key role in implementing and managing the first full street tree inventory for the city. He comes to Baltimore from Northeast Ohio with over 10 years of experience in GIS and Forestry. He holds a degree in Conservation from Kent State University, and a graduate certificate in GIS from the University of Denver. In his free time Nathan enjoys hiking, biking, and kayaking the many parks in the area.

Shaun Preston is the Camp Small Yardmaster for the Foresty Division. He manages the wood sorting facility and its urban wood utilization program. All the fallen and removed City-owned trees get taken to Shaun and he helps the wood find a new purpose. He has seen City trees repurposed into wooden bowls, tables, guitars, whiskey barrels, and more. Shaun enjoys teaching folks about wood utilization, helping them achieve their creative goals, and he loves seeing when a special old tree is memorialized through repurposing its wood.
When he’s not hustling logs you can find Shaun with his family, going on hikes, working in the garden, fishing for trout, building things, making art, playing music, and sometimes watching tv on the couch.