Our Staff & Trustees

Dan Millender

Dan Millender, Executive Director

Dan is a Maryland native, with an M.B.A. from Loyola University of Maryland. His experience as general manager of a multi-million dollar wholesale tree and shrub nursery and custom home builder CFO qualifies him exceptionally well to fulfill the organization’s mission of enhancing the city’s quality of life by improving our urban landscape with trees.

Email Dan at dan@baltimoretreetrust.org

Amanda Cunningham, Director of Programs

Amanda, an ISA Certified Arborist and Tree Risk Assessor, is an experienced urban environmental program and project manager.  As Programs Director, Cunningham  handles program operations, administration, and TreeKeepers, focusing on urban community forestry. Prior to joining  BTT, she  administered greening programs for the Parks & People Foundation for almost a decade, followed by six years at an engineering design firm, where she managed proposals and marketing. Cunningham  serves on the Baltimore City Forest Conservancy District Board and has been a volunteer educator with the Baltimore City Master Gardeners for over 15 years. She is a co-founder of BTT.

Email Amanda at amanda@baltimoretreetrust.org

Jill Jonnes

Jill Jonnes, Director of Advancement

Jill is BTT's Director of Advancement, working on fundraising, marketing and development. In 2011, she was a scholar-in-residence at the Woodrow Wilson International Center in Washington, D.C., working on the topic of “Trees as Green Infrastructure,” and in 2010, she served as writer and researcher for the final report for the National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling. Author of five books, she has been both a Ford Foundation and National Endowment for the Humanities scholar. She is under contract to Viking Press for a book on American cities and trees. She is the founder of BTT.

Email Jill at info@baltimoretreetrust.org

Cassie Caleo, Associate Director

Cassie works on marketing, design and development. She has a degree in Landscape Architecture from the University of Maryland, College Park.  Prior to joining the Baltimore Tree Trust team, Cassie worked as a Landscape Designer for a multi-disciplinary design firm specializing in pedestrian and bicycle transportation.

Her experience as a designer encompasses a wide range of scales and project types including trail and streetscape design, site design, master plans and community engagement.

Email Cassie at cassie@baltimoretreetrust.org

Alex Smith, Field Operations & Outreach

Alex leads the organization’s field operations which consist of managing green jobs and general maintenance of trees. He has several years of experience in the landscaping profession and has completed Maryland Master Gardener certification. Alex has worked on projects designing and constructing a variety of landscapes and hardscapes. With his diverse greening background and his passion to educate, he is a natural for assisting with our organization’s neighborhood outreach efforts. Alex’s charismatic personality makes him a great addition to the Baltimore Tree Trust team.


David Bramble

Debbie Cameron

Howard K. Cohen

Christopher A. Feiss, Co-Chair

Alex G. Fisher, Treasurer

Allan House

Larry Jennings, Jr.

Carol Macht

Thomasina E. Poirot, Co-Chair

Maria Tarmoun

Dr. Annie Umbricht

Chad Vrany


Jane Brown

W. T. Dixon (Dick) Gibbs

Jill Jonnes

Barbara Shea


Tom Horton