Each annual Northwest Flower & Garden Festival brings us an opportunity to select three prestigious individuals from the landscape design and horticulture industry to come together and award the medals to each show garden, to vote on the coveted Founder’s Cup Award (Best in Show), and to determine the American Horticulture Society Environmental Award winner. These judges will also be the speakers in the Show’s acclaimed seminar series.

Without further ado, here are the 2020 Northwest Flower & Garden Show Judges!

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James Alexander-Sinclair

James Alexander-Sinclair

Award-Winning Designer, Writer, Speaker, Radio & TV Star

James Alexander-Sinclair is one of the foremost garden designers in the United Kingdom. In addition to his garden design business, he is an award-winning writer, a compelling speaker, frequent broadcaster and an elected member of the Council of Royal Horticulture Society. He has had a regular column in Gardeners World magazine for eleven years, and has written features for The Daily Telegraph, Financial Times, The Garden, Gardens Illustrated and many others. He was also a regular blogger for Fine Gardening magazine. James is one part of the hugely popular “Three Men Went to Mow” film series that covers many aspects of gardens and gardening, described as “not terribly serious.” A lively speaker, James regularly serves as host for awards ceremonies for the Society of Garden Designers, The Garden Media Guild, and the RHS, along with the BBC Gardeners’ World Live. James is an accredited Gardens judge for the Royal Horticulture Society (judging all RHS Flower Shows), and internationally, James helped set up the Moscow Flower Show in 2012 and continues to chair their judging panel. jamesalexandersinclair.com

James will be giving 2 seminars at the show:

A Life in Five Gardens
Wednesday, Feb 26 at 10:00 am / Rainier Room

Garden Design Is Not Witchcraft!
Thursday, Feb 27 at 1:00 pm / Rainier Room


James Alexander-Sinclair's appearance
sponsored by the
Northwest Horticultural Society logo

David Culp

David L Culp

Designer, author, A Year at Brandywine Cottage and The Layered Garden, and VP, Sunny Border Nurseries

David Culp is the creator of the gardens at Brandywine Cottage in Pennsylvania which is listed in the Smithsonian Institution Archives of American Gardens. David has been lecturing about gardens nationwide for more than 25 years. Articles on David’s work have appeared in Gardens Illustrated, Horticulture Magazine, and other publications. He is the Principle of David L. Culp Designs and Owner of Brandywine Snowdrops. David is a former contributing editor to Horticulture magazine and served as chairman of the Mid-Atlantic Hardy Plant Society. David is Vice President for Sunny Border Nurseries in Connecticut, the largest perennial grower on the East Coast. He is author of The Layered Garden: Design Lessons for Year-Round Beauty from Brandywine Cottage (Timber Press, 2014), named Book of the Year by GardenComm International, and his latest book, A Year at Brandywine Cottage: Six Seasons of Beauty, Bounty and Blooms, will be published by Timber Press in early 2020. David is an herbaceous perennials instructor at Longwood Gardens and developed the Brandywine Hybrid strain of hellebores. His garden has been featured in Martha Stewart Living and on HGTV. He is a recipient of many awards including the 2014 Garden Media Award from the Perennial Plant Association and the Distinguished Garden Award from the Pennsylvania Horticultural Society. He has also been awarded the Pennsylvania Horticultural Society Award of Merit, as well as others. davidlculp.com


David will be competing in “Container Wars” and will be giving 2 seminars at the show:

Container Wars
Wednesday, Feb 26 at 11:30 am / Container Wars Stage in the North Hall

A Year at Brandywine Cottage: Six Seasons of Beauty, Bounty and Blooms
Wednesday, Feb 26 at 4:30 pm / Rainier Room / Book signing to follow

Making Meadows: Biodiverse Habitats to Support Pollinators and Wildlife
Thursday, Feb 27 at 11:30 am / Rainier Room / Book signing to follow

Dan Hinkley

Dan Hinkley

Director, Heronswood Garden and author, The Explorer’s Garden

Dan Hinkley is native to the Zone 4 highlands of Michigan, and his lifelong interest in plants lead him to receive his B.S. in Ornamental Horticulture from Michigan State University and his M.S. in Urban Horticulture from the University of Washington. In 1987 he and his husband, architect Robert Jones, established Heronswood Nursery. Devoted to introducing rare plants to the gardeners of North America, this endeavor led him into the wilds of China, South and Central America, Mexico, New Zealand, South Africa, Nepal and Vietnam over the past 20 years. In 2012 the Port S’Klallam Tribe purchased the Heronswood property and restored the garden, and Dan remains as its Director. Dan has written for many periodicals, including Pacific Horticulture, The American Gardener, Horticulture, and The Gardener and has a regular column in Horticulture. He is the author of three award-winning books: The Explorer’s Garden: Shrubs & Vines (Timber Press, 2009), Winter Ornamentals (Sasquatch, 1993) and The Explorers Garden: Rare and Unusual Perennials (Timber Press, 1998). He is presently writing a new book, on the making of Windcliff, his private garden, to be published by Timber Press in late 2020. Dan has been awarded the Scott Medal, the Liberty Hyde Bailey Award, and the Veitch Memorial Medal, among others. He serves as horticultural consultant to Monrovia Growers and to several design firms, travels the world to find new plants, speaks to horticulture groups, weeds his garden and savors every moment of life with Robert and their pups at Windcliff. danieljhinkley.com


Dan will be giving 2 seminars at the show:

Twenty Places, Twenty Plants (OK, Maybe More than Twenty…)
Wednesday, Feb 26 at 11:30 am / Rainier Room / Book signing to follow

Googling Dan’s Brain for the Best Trees, Shrubs and Vines for NW Gardens
Thursday, Feb 27 at 10:00 am / Rainier Room / Book signing to follow

Our three Show Judges headline a roster of speakers in our acclaimed Seminar Series. Your ticket to the Show includes all Seminars for FREE!

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