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.
Sareena Jerath, Landscape Designer
Sareena Jerath is a certified master gardener and landscape designer. Sareena has served on the board of ROMP (Renovations of Macomb Park) and helped to restore the neighborhood playground. As a previous volunteer for the Cultural Landscape Foundation, Sareena worked to identify and help preserve at-risk historical landscapes for the 2006 Landslide Program. Formerly, Sareena was a health lawyer with Epstein, Becker and Green in Washington. Sareena also holds a graduate degree in Biology, and worked as a researcher in oncology clinical trials and as an analyst with the Institutional Review Board of Massachusetts General Hospital, Boston. Sareena grew up in the Washington area and has lived in Cleveland Park since 2005. She, her husband, Nakul, and their three children relish having the Tregaron estate as their virtual backyard.
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 include Meridian Hill Park, St. Elizabeth’s Hospital and the World War I Memorial. Glenn previously worked for Heritage Landscapes, the Vermont-based 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 restoration and rehabilitation work.
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 the forthcoming Ellen Shipman and the American Garden (University of Georgia Press/LALH, 2018).
Judith lives in Boston. She taught landscape design at Radcliffe Seminars 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.
Susie Zimmermann, Marketing and Communications Professional
Susie Zimmermann brings over 30 years of marketing and communications experience to her volunteer work on behalf of the Conservancy. She has helped raise the national profiles of such organizations as the Peace Corps, the Corporation for National and Community Service, and the National Institute of Standards and Technology. In 2004, Susie launched her own marketing firm. She currently directs communications efforts for Bullis School in Potomac, Maryland. Susie lends her expertise to Tregaron by working to enhance our print, online and social media presence, refine our branding and lend critical support to our development projects. She and her husband Steve moved Cleveland Park when they became empty nesters, and enjoy living near Tregaron with their dog Luna and cat Tony.