Holly Shimizu

Garden Consultant


Holly's herb garden in Lewes, Delaware was inspired by early American herb gardens. She harvests herbs and creates various herbal products including teas and distilling herbs to produce hydrosols and essential oils.


Anamorphosis, a design by Francois Abelanet at Radice Pura, a horticultural park and nursery in Carruba, Sicily


The U.S. Botanic Garden as viewed from the Bartholdi Park.
Holly was the Executive Director here from 2000 through 2014.


Holly H. Shimizu is a nationally recognized horticulturist, consultant, and educator living in Maryland. With a rich background in all aspects of public gardens, extensive experience leading garden tours and workshops, and a proven commitment to plant conservation and sustainability, she has been making plants and gardens more accessible and exciting to both professionals and amateurs for over four decades. Holly consults public gardens and helps individuals envision and create peaceful and sustainable gardens. She also lectures and writes on a variety of horticultural topics and leads gardens tours, locally and around the world.  In 2020, Holly was presented with the Scott Garden and Horticultural Medal and Award from Swarthmore College. Read Holly’s blog here and see photos of her gardens and garden tours here.

Holly Shimizu fountain

Current Projects:

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. She recently designed and implemented a pollinator and wildlife habitat garden in Glen Echo. She writes a monthly column for “The Echo“, a local publication.

Currently Holly is working as a Horticultural Consultant at the Arlington National Cemetery.

Holly is currently writing and illustrating a book for children about frogs and their habitats.

Holly is now on The Board of Trustees of The American Botanical Council, publishers of the magazine Herbalgram, based in Austin Texas.

Holly serves as Secretary and Head of the Awards Program 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.

Upcoming garden travel programs: Treasures of Japan, June 11-20, 2021 and Gardens of Bavaria, September 3-11, 2021. See garden tours page for info.

Holly Shimizu and colleagues
Holly Shimizu on New Zealand trip

Swan’s neck, Agave attenuata, in park in Taormina, Sicily