Rizaniño “Riz” Reyes

Rizaniño “Riz” Reyes is gardens manager for McMenamins Anderson School in Bothell, Washington. He also maintains RHR Horticulture, an enterprise dedicated to growing and designing gardens, floral design, and teaching and lecturing for various garden organizations and publications. Riz has a BS in Environmental Horticulture & Urban Forestry from the University of Washington and worked as a horticulturist for the UW Botanic Garden’s Center for Urban Horticulture.

Rick Peterson

Great Plant Picks


Rick Peterson manages the Great Plant Picks educational program at the Elisabeth Miller Botanical Garden in Seattle, Washington. His home garden in Federal Way, which he shares with frequent Pacific Horticulture contributor Richie Steffen, is landscaped with “restrained exuberance” and includes overly abundant collections of species rhododendrons, iris, epimedium, ferns, and a plethora of other rare and unusual flora. Both plead guilty to the current menagerie of potted plants waiting patiently in the driveway…

Judy Maier

Judy Maier is a garden designer and coach, garden writer, and aesthetic pruner of all landscape trees, but particularly of Japanese maples. She lives in San Jose, but her work takes her throughout the San Francisco Peninsula, the Bay Area, and beyond. Visit her website at www.judysgardens.com or read her blog at www.gardendancing.blogspot.com.

Arnold Markman

Arnold Markman grew up in a New York City apartment without plants. He fell in love with gardening when he moved to San Diego in 1975. He is now Chief of Occupational Medicine at Kaiser Permanente, a runner, and a backpacker. He also loves to travel to foreign lands to see plants in habitat.

Lucy Tolmach

Lucy Tolmach worked at Filoli for 35 years beginning as a gardener in the walled garden before moving on to director of horticulture. She and her husband, Jonathan, have recently relocated to their family’s land in Ojai, California. In addition to planting a large fruit and vegetable garden and caring for the land, they’re excited by the opportunity to bake bread, keep chickens, ducks, pigeons, doves and possibly peacocks, and work in the family winery.  Lucy plans to turn her attention to designing gardens and planting daffodils.

Donn L Todt

Donn L Todt served as horticulturist for the Ashland, Oregon Parks Department for thirty years. His current research focuses on human roles in plant geography and landscape history. He now serves as head gardener for the landscape around his old house in Corvallis, Oregon.

Ann Northrup

Ann Northrup spent her undergraduate years at the University of Michigan, where she earned a Bachelor of Science in microbiology. Her interest in plant pathology started there, but she took a five-year diversion to work in the field of medical diagnostics at Bio Rad Labs in Richmond, California, and another two years as a molecular biology research assistant at UC Irvine. Returning to plant pathology, Ann earned a master’s degree UC Berkeley. She has worked primarily in disease diagnostics of ornamental plants, first with Soil and Plant Lab in Orange, California, and then with Nurserymen’s Exchange in Half Moon Bay.

Ann currently consults privately in plant pathology and arboriculture and teaches horticulture classes at Foothill College in Los Altos Hills and Merritt College in Oakland. One of her professional pleasures is volunteering at the Sick Plant Clinic. She is also an active volunteer in the UCCE Master Gardener program for Santa Clara County. In her spare time, she enjoys playing her flute in a woodwind quintet in Saratoga and with the Saratoga Community Band conducted by her husband. And of course … she gardens.

Matt Ritter

Matt Ritter is a professor in the Biology Department and director of the Plant Conservatory at California Polytechnic University, San Louis Obispo. “I want to help people know the trees in their city. Not just see them as green blobs,” says this disciple of street tree diversity. Ritter is the author of A Californian’s Guide to the Trees Among Us (Heyday Books, 2011) and The Plants of San Louis Obispo, Their Lives and Stories (Kendall Hunt Publishing, 2008).  He is the chair of the City of San Luis Obispo Tree Committee, and editor-in-chief of Madroño, the journal of the California Botanical Society.


Earl Nickel


EARL NICKEL is an Oakland-based horticulturist, writer, and photographer. He writes a weekly column for the San Francisco Chronicle profiling garden-worthy plants and has contributed feature articles to Pacific Horticulture, Fine Gardening, and various Bay Area newspapers. Erle maintains a large and varied garden and blogs for Annie’s Annuals and at www.normsnursery.blogspot.com.

Richie Steffen

Richie Steffen is curator of horticulture for the Elisabeth C. Miller Botanical Garden in Seattle, where he manages the rare plant collections and leads the acquisition of new plants. Richie is co-author of The Plant Lover’s Guide to Ferns from Timber Press. He is an active member of numerous horticultural societies in the area and lectures widely about garden-worthy plants.

Frederique Lavoipierre

Frederique Lavoipierre is the creator and author of “Garden Allies,” a series that ran for 10 years in Pacific Horticulture magazine. She also teaches classes and workshops on sustainable landscaping, including ecological principles, habitat gardens, beneficial insects, soil ecology, freshwater ecology, and aquatic invertebrates. Follow her on Facebook at www.Facebook.com/Garden.Allies.

James Henrich

James E Henrich is curator of living collections at Los Angeles County Arboretum & Botanic Garden, having previously worked at the Conservatory of Flowers and San Francisco Botanical Garden, Denver Botanic Gardens, and Missouri Botanical Garden. He is currently the vice president of the Southern California Horticultural Society.

Richard G Turner Jr

Richard G Turner Jr is the editor emeritus of Pacific Horticulture. After receiving degrees in architecture and landscape architecture from the University of Michigan more than thirty years ago, he escaped to California, where he has worked in the fields of garden design, public garden education and administration, and garden publishing. His small, chemical-free San Francisco garden provides habitat for wildlife while serving as a test ground for mediterranean-climate plants.