Board & Staff

The last election of the board was conducted online in October 2020.

Barb Christopher

Barb Christopher, President (First Term)

Barb is a former museum curator and continues to consult for museums. She has also offered garden coaching and design services. A Master Gardener since 2011, she has been an HPSO Vice President since 2016. She has served as chair the Garden Travel Committee and steps back into the role of Chair of the Membership & Development Committee. She is active in the Hortlandia Committee and Speaker Program Committees. She has served as tour planner and escort on HPSO tours to Wales, Devon/Cornwall, and Spain. Barb gardens in Northeast Portland.

Tom Barreto

Tom Barreto, Vice President (Second Term)

Tom is an optometrist and owner of Eyes on Broadway. A long-time HPSO volunteer, he joined the Board in 2010. He is chair of the Open Gardens Directory Committee, also serves on the Nominating Committee, and volunteers for other HPSO activities. Tom gardens in Northwest Portland.

Kate McMillan

Kate Anchev, Vice President (Second Term)

Kate grew up in Connecticut, and has since lived in London, Washington DC, San Francisco, and now Portland. After being limited to houseplants for years​ through big-city living​, she fell head first into gardening with the purchase of her first home​ (and garden)​ in SE Portland in 2008. She’s owned and runs a web design company, Outbox Online, since 2009, and also a garden design business, Cultiverity, since 2014. ​Her home garden is a certified Backyard Habitat, and is filled with drought tolerant, low-maintenance plants from all over the world that showcase her love of texture and color. ​Kate​ has been a HPSO board member since 2016, and​ is an HPSO blogger ​as well as an advocate for social media (and other) marketing and outreach for HPSO to grow their platform. After updating the HPSO website, starting the HPSO blog, and learning about and contributing to all of HPSO's outreach activities by promoting them to existing and potential members online, she ​continues to have a keen interest in amplifying the Board's efforts towards reaching a new (and younger) audience.

Beth Hansen-Winter

Beth Winter, Vice President (First Term)

Beth Hansen-Winter is a photographer and book designer.  She is cp-chair of HPSO's botanical exhibits team, and co-chairs the Nominating Committee. She has also served as chair of the HPSO/Garden Conservancy Open Garden Days in recent years, and volunteer for other HPSO activities. Beth gardens in Beavercreek.


Jeanne DeBenedetti-Keyes

Jeanne DeBenedetti-Keyes, Secretary (First Term)

Jeanne Debenedetti-Keyes works for the Bureau of Land Management (BLM) as a GIS (Geographic Information Systems) Specialist, providing database development, analysis and mapping services to manage BLM public lands in Oregon and Washington. She has been a key member of the Gen(i)us Series for years and will move it forward after its one-year hiatus. She is a contributor to the HPSO Quarterly and volunteers at various HPSO activities. Jeanne gardens in Southeast Portland.


John BarkerJohn Barker, Treasurer (First Term)

John Barker has practiced as an architect in Portland since 1979.  He has a lifelong interest in gardening and has designed and maintained landscaping for residential rental properties and his church for many years. He has participated in several HPSO international tours. John has served for many years on the boards of community organizations, including Community Music Center, Oregon Repertory Singers, and Westminster Presbyterian Church. He has served as president and been an active board member of the Belmont Neighborhood Association and Belmont Area Business Association and was an organizer of the Belmont Street Fair for nine years. He intends to be involved in HPSO activities including tours, open gardens, After Hours, and other areas. John gardens in Southeast Portland.

Loree Bohl

Loree Bohl, Director-at-Large (Third Term)

Loree began gardening in NE Portland in 2005. Her love for agaves, cactus and all things spiky, was the inspiration for her blog name, Danger Garden (, which she began in early 2009. Looking at her garden, and blog, you might think she comes from the Desert Southwest but she’s actually a Pacific Northwest native who thrives on the vibrant horticulture scene here in Portland. A freelance garden writer, Loree is a firm believer there is always room for one more plant.

Vicki Green

Vicki Green, Director-at-Large (First Term)

Vicki feels that her people and project management skills—stemming from her 35 years of experience in the high-tech sector—will be an asset on the HPSO Board of Directors. She has volunteered regularly for years for the companies she’s worked for—most prominently the Oregon Food Bank. Vicki purchased a home on a one- acre lot in Vancouver, Washington, in 2010, having had no previous gardening experience. It was wall-to-wall grass. She has had to learn by trial and error how to build beds and borders, and she has found HPSO speaker programs and Study Weekends to be extremely helpful in that endeavor. She has taken part in several HPSO garden tours in the States and abroad.

Madeline Forsyth

Madeline Forsyth, Director-at-Large (First Term)

Madeline was a Registered Nurse for 23 years, mostly at Adventist Medical Center, until her retirement in 2005. Upon her retirement, she took the Master Gardener program and began volunteering at the International Rose Test Garden in Washington Park. She volunteers there weekly during the growing season and serves as a tour guide as well as Vice-President of their Friends Board of Directors. While her children were growing up, she was very active in a variety of parents’ groups and feels that experience will transfer to the HPSO Board of Directors. She is especially interested in HPSO’s Open Garden Program. She is on the Garden Travel Committee and has been on many HPSO-sponsored trips. Madeline gardens on a quarter-acre lot in Gresham.

Lisa Fuller

Lisa Fuller, Director-at-Large (First Term)

After 10 years as HPSO’s Assistant Administrator, Lisa retired from the position in 2020. She continues to be active in the organization in a variety of ways. Most notably, she is Co-Chair of the Library Committee, and making the HPSO Library accessible to members remains important to her. She has been a regular volunteer at Hortlandia, Study Weekend, and speaker programs and is involved in four HPSO interest groups, two of which she helped found. She has been a longtime contributer to The HPSO Quarterly, as well as to its previous incarnation, The Bulletin. Lisa has been gardening since the fourth grade—from Los Angeles to New Orleans (where she also owned a successful floral design business), and now Southwest Portland.

Harry LandersHarry Landers, Director-at-Large (First Term)

Harry Landers has a degree in Horticulture from North Dakota State University.  After working in horticulture in Milwaukee, Wisconsin, he moved to Portland and worked for 28 years at the International Rose Test Gardens, where he was named curator in 2015. During his time at the Garden, Harry increased its number of roses from around 3,500 specimens to just under 11,000, and the Garden gained recognition as one of the top 100 rose gardens in the world and top 10 public gardens in the U.S.  Representing the International Rose Test Garden, Harry joined the board of the Portland Rose Society in 2005 and served as program chair until 2018. He is an active Royal Rosarian and the Royal Gardner for the second time. He's also active with Clackamas Master Gardeners. Harry intends to apply his diverse experience in a wide range of HPSO activities. Harry gardens in Clackamas.

Eloise MorganEloise Morgan, Director-at-Large (Second Term)

Eloise Morgan, our new Quarterly magazine managing editor, was appointed to Director at large.  Eloise, a transplant from New York, lives in Vancouver where she and her husband are hard at work creating a new garden.   Upon arrival to the PNW, she immediately volunteered to assist with the production of HPSO's Quarterly magazine.  A long-time amateur gardener, she is also a member of the HPSO Clark County Interest Group and a former president of the New York Garden Club founded by Louise Beebe Wilder.  A retired lawyer, Eloise has extensive volunteer experience in writing and editing and has served on numerous non-profit boards and municipal committees.

Zoe NielsenZoe Nielsen, Director-at-Large (First Term)

Originally from Australia, Zoe developed an interest in plants early on by observing the local subtropical rainforest and learning from her botanist mother. She went on to study landscape architecture, but later switched to law. She eventually worked in environmental law and then in international relations. She has experience organizing conferences, briefing speakers, developing agendas, organizing publicity, and following bylaws. When she lived in Vancouver, British Columbia, she was the founding chair of two non-profit groups. Zoe now gardens in White Salmon, Washington, and has started an interest group there for HPSO members in the Columbia Gorge. She is particularly interested in dry gardening.

Phillip Oliver

Phillip Oliver, Director-at-Large (Second Term)

Phillip Oliver is a retired librarian and professor, a Master Gardener, and a blogger. He is co-chair of HPSO's Library & Book Committee and oversees sales of books at HPSO events. He contributes book reviews to the HPSO Quarterly and the HPSO blog, posts photos on the HPSO Instagram account, and volunteers for other HPSO activities. Phillip gardens in Vancouver.


Adria Sparhawk

Adria Sparhawk, Director-at-Large (Second Term)

Adria Sparhawk is the owner of Thicket Nursery and also works as a garden designer and coach. She has led the After Hours committee organizing social events for HPSO members.  She assists with social media outreach via Instagram posts on Wild Wednesdays, contributes to Facebook and blog articles.  Adria has also joined the Education/Program committee and looks forward to being involved in the organization of upcoming events.  Adria gardens in Northeast Portland.

Randi ThomasRandi Thomas, Director-at-Large (First Term)

Randi recently retired from the Bonneville Power Administration after 35 years. She started as an engineer and eventually worked her way up to various management and leadership positions. She is a dedicated volunteer, most notably as the Volunteer Coordinator for Hortlandia. Other organizations she has volunteered for include the Master Gardeners, the Rogerson Clematis Society, her local Watershed Council, and her local food pantry. Randi gardens in Gladstone and describes herself as more of a plant geek than a designer. She is currently working on making her garden lower-maintenance and more drought-tolerant.

Linda WisnerLinda Wisner, Director-at-Large (First Term)

Designer and author Linda Wisner brings a great deal of experience to the HPSO Board, having served as Director from 2010–2012, Vice-President from 2012–2014, and President from 2014–2016. She also co-chaired our 2015 Study Weekend and was highly involved in Study Weekend 2019. In addition, she employs her design skills on each issue of the HPSO Quarterly. Linda gardens on Sauvie Island. Her “Flicker Farm” consists of over an acre of ornamental gardens, edibles, and meadows.

Jim Rondone

Jim Rondone, Immediate Past President

Jim joined the HPSO Board in 2007 after serving on the education and Gen(i)us committees. In 2010, he became First Vice President, and served as President from 2012-2014. He served as Immediate Past President until returning as President when a vacancy occurred in April 2016. Jim continues to be active with the Gen(i)us Series and other HPSO programs, including planning and escorting HPSO tours abroad. Jim gardens in Southwest Portland.




Beth Sorensen, Office Director
Hayden Brown, Digital Program Coordinator
Cheryl Kleinsmith, Bookkeeper