Speakers’ Bureau Presenters

dave charlton

Dave Charlton has been a volunteer at Tyler Arboretum for several years. A lifelong nature enthusiast, Dave started by volunteering in Plant Records. Later, he also became a docent, taking visitors on tours throughout Tyler. As an amateur naturalist and nature photographer, Dave has been able to share his enthusiasm for the outdoors through outreach programs. His photographs of plants and activities at Tyler often appear in Tyler publications. Dave also serves as a member of the Tyler Arboretum Board of Trustees.

Julia Lo Ehrhardt

Julia Lo Ehrhardt is the Community Engagement Director at Tyler Arboretum and leads the team of communicators, programmers, gardeners, and volunteers in reaching multiple audiences. Julia has over 30 years of experience in the public garden field which includes directing the Anderson Japanese Garden, directing the School of Professional Horticulture at the New York Botanical Garden, and managing outdoor horticulture at Baywood Greens and Longwood Gardens. Julia was also the Director of Visitor Experience at Mt. Cuba Center where she managed the tour programs and visitor services. Julia earned a B.S. in Ornamental Horticulture from the University of British Columbia and a M.S. in Public Horticulture from the University of Delaware, Longwood Graduate Program.

Nancy Heinbaugh

Nancy Heinbaugh is the Volunteer Coordinator at Tyler Arboretum, overseeing the Volunteer program, including the activities and continuing education for the volunteers with regards to the arboretum. As a life-long gardener and a PA Master Naturalist trainee, discovering the intricacies of the natural world is her passion. As a former volunteer at Tyler, Nancy was a Docent, writer, worked in the Butterfly House, and participated in a number of gardening and outreach opportunities. Nancy enjoys sharing the magical transformation of caterpillars to butterflies with people of all ages.

The Herb Society of America was created in 1933 for the purpose of furthering the knowledge and use of herbs. The founders proposed to contribute their experiences to the horticultural and scientific world. As one of its projects, The Philadelphia Unit of The Herb Society of America designs, plants and maintains The Fragrant Garden at the Tyler Arboretum. Education and study is an important part of the Society and the collective expertise of its members has produced several slide lectures and booklets. Classes on herbs would be conducted by a member of The Herb Society of America.

Pete Prown

Pete Prown has led a 35-year career in journalism, working in both the music business and the Philadelphia area gardening world. He has been employed as a writer, magazine editor and landscape photographer. For the past 20 years, Pete has also honed his skills as an oil painter specializing in wildlife portraits, still life, landscapes and botanicals. He has exhibited his work in Pennsylvania and Connecticut. In his spare time, Pete volunteers at the Tyler Arboretum in Plant Records and writing blogs. While at Tyler, he especially enjoys birding.

Bess Trout

Bess Trout was a gardener for Tyler Arboretum for a number of years, working at maintaining the 650-acre property, including the historic lilac and magnolia collections and themed gardening areas. She now coordinates the publication of Tyler’s Newsletter – The Painter Press. With over 10 years of horticultural experience, Beth also teaches classes at Tyler and Morris Arboretum of the University of Pennsylvania on topics including pollinators, ephemerals and rain gardens. A graduate of Washington College with a degree in Environmental Studies, Beth has gardened, taught and led programming at the Chicago Botanic Garden, Chesapeake Bay Foundation, and the Maryland Conservation Corps.