Tamara Belt, Landscape Committee Chair
Tamara joined the Board in 2010 and chairs the Landscape Committee. A landscape designer, she owns Hawthorne Garden Design, which specializes in high-end residential landscape design in the DC metropolitan region.
Before earning her degree in landscape design, Tamara was an environmental economist at the World Bank and the Inter-American Development Bank for over ten years, where she focused on projects in the environmental sector, such as establishing protected areas in Asia, promoting ecotourism in Brazil and Bolivia, and designing afforestation projects in Central America. She earned her Ph.D. in economics from the London School of Economics.
A native Spanish speaker and half-Colombian, Tamara also previously served as PTA co-chair at the Oyster-Adams Bilingual School. Tamara is married to Sean Greene, and they live in Woodley Park with their three children. She is delighted to be able to support the restoration of this neighborhood treasure.
Ann Brooke, Volunteer Landscape Designer
Ann Brooke has been designing and installing gardens, large and small, since 1987 — penthouses in New York City, Brooklyn brownstones, second homes and country estates in Connecticut, Massachusetts, Shelter Island and Colorado, schools in Brooklyn, and playgrounds in Colorado and New York. She recently relocated to Washington and is enjoying the opportunity to work in a new and more temperate environment. Ann grew up outside Sydney in a part of Australia full of lush, serene, sophisticated gardens whose English style had been adapted to a very different climate and landscape. Her landscape practice, Ann Brooke Landscape Design LLC, draws on that history of flexible and creative adaptation. Her volunteer work for Tregaron has included Shipman-inspired woodland garden design, tree planting plans, and supervising landscape installations.
Jennifer Packard, Volunteer Photographer
Jennifer Packard is a professional photographer who has a passion for nature photography. Inspired by her father’s service in the Navy in World War II, she served in the Navy Reserves for 10 years as a public affairs officer, documenting activities of the Navy around the globe. She now works as a freelance photographer in Washington, DC. Her work has been featured in many publications, including USA Today, NBC News, ABC Newspapers, Self.com, Navy Times, and Seabee Magazine.
Jennifer’s interest in nature photography began at a very young age, growing up in rural western New York State. By capturing the beauty of Tregaron, she hopes to inspire others to preserve the natural world and the open green spaces in our community.
Jennifer earned a BFA in Applied Media Arts/Photography and a Masters in Communication Studies from Edinboro University of Pennsylvania. View Jennifer’s portfolio here.
Shawn Siefers, Master Arborist
Shawn Siefers is certified as a Master Arborist through the International Society of Arboriculture, and has been involved in the Arboriculture field since 1999. He has worked for The Care of Trees, a sustainable tree care service, since 2003, where he specializes in tree health care, a skill he brings to his work with Tregaron. Shawn has also brought his expertise to a wide range of institutions, including a number of campuses such as Georgetown University, Washington International School, Sidwell Friends School, Georgetown Visitation, and Maret School. He has also provided tree care services for the National Cathedral. Shawn is affiliated with a number of professional associations, including the Maryland Arborist Association, and consults for the City of Gaithersburg. He holds degrees in Forestry from Allegany College of Maryland and the University of Maryland.
Glenn Stach, RLA, LEED AP, Preservation Landscape Architect & Planner
Glenn Stach has been dedicated to cultural landscape preservation for over 20 years. Glenn has a proven record of sustaining and enhancing the historic legacy of significant landscapes through design and planning. Glenn obtained his degree from Virginia Tech, and has since managed projects in landscape architecture, historic preservation, and urban design for clients such as the Central Park Conservancy, the James Monroe Birthplace and Biltmore Estate. His Washington DC-based projects have included Meridian Hill Park, St. Elizabeth’s Hospital and the World War I Memorial.
Before Glenn started his firm, he was employed by Heritage Landscapes, the Vermont-based preservation planning firm that authored Tregaron’s Cultural Landscape Report. Glenn has served on the Board of Directors of The Cultural Landscape Foundation, which has recognized Tregaron as a notable destination. We are delighted to have Glenn’s expertise and guidance as we move forward in our work to renew and recapture our historic Platt/Shipman landscape.
Judith B. Tankard, Independent Landscape Historian
Judith Tankard is a landscape historian, preservation consultant and author. She is a frequent lecturer on landscape history and a noted expert on Ellen Biddle Shipman. She is the author of The Gardens of Ellen Biddle Shipman (Sagapress/Library of American Landscape History, 1996) and Ellen Shipman and the American Garden (University of Georgia Press/LALH, 2018).
Judith lives in Boston, Massachusetts. She taught landscape design at Radcliffe Seminars for many years and was the founding editor of the Journal of the New England Garden History Society. She currently serves on the Stewardship Council of The Cultural Landscape Foundation. Judith lectured at Tregaron in 2012 and periodically advises the Conservancy on Shipman’s landscape designs.