Holly & Osamu Shimizu are special guests and speakers for a Friends of the National Arboretum tour: Treasures of Japan, Sacred Gardens & Temples. This tour is SOLD OUT. Another Japan trip will be announced soon; more information will be posted here once it’s available.
Holly is actively involved with The American Horticultural Society. 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.