Holly Shimizu

Garden Consultant


Holly & Osamu Shimizu will host AHS Travel Study Program: Historic Sites & Gardens of Malta & Eastern Sicily, April 2019


Explore gardens and historic sites from London to Bergen on AHS's Voyage to Green and Gentle Lands, May 2019


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.  Read Holly’s blog here!

Holly Shimizu fountain

Current Projects:

With watercolor artist Bonny Lundy, Holly is taking a group to Finca Luna Nueva Lodge in Costa Rica this summer. More information here.

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.

Holly Shimizu and colleagues
Holly Shimizu on New Zealand trip

 – artwork by Bonny Lundy