Currently Holly is leading the Environmental Committee for Glen Echo, Maryland to head efforts for healthy lawn and landscape care, sustainable garden efforts, and coordination of environmental programs.
Holly was a contributing author for a new book called Living in the Anthropocene – Earth in the Age of Humans, published in 2017 by the Smithsonian Institution.
Holly is now on The Board of Trustees of The American Botanical Council, publishers of the magazine Herbalgram, based in Austin Texas.
Holly is on the Board of Directors of the American Horticultural Society (AHS). The AHS connects people to gardening, raises awareness of earth-friendly gardening practices, introduces children to plants, brings together leaders to address important national issues, and showcases the art and science of horticulture. Please visit their website for more information.
In Delaware, Holly is on the Advisory Council for the Delaware Botanic Gardens at Pepper Creek. The garden is in the early conceptual and design phase. Please see Delaware Botanic Gardens for more information.
Holly is on the Advisory Committee for Las Cruces Biological Station, located in Costa Rica. Las Cruces is part of the Organization for Tropical Studies and is home to the Wilson Botanical Garden. Much of the garden was designed by Roberto Burle Marx. For more information, see their website.
Holly occasionally hosts gardening workshops at Fiddlehead Cottage in Lewes, DE, adjacent to her 1730 home and award-winning gardens there. Fiddlehead Cottage briefly operated as a retail store (a partnership between Holly and writer, artist and photographer Carole Ottesen), offering vintage and one-of-a-kind garden finds and furnishings.