HPSO:  Celebrating 32 years of serving gardeners.

We make the world a better place through horticulture.


The Hardy Plant Society of Oregon is a community of passionate gardeners at all levels. The Society offers an extraordinary array of educational programs and activities year-round. With now over 2500 members, HPSO is one of the largest non-profit gardening organizations on the West Coast.

Plant Sale

Discover cool plants

Plant Sale

Visit amazing private gardens

Plant Sale

Attend educational programs and make new friends

Plant Sale

Plant Sales featuring fantastic local nurseries

Plant Sale

One-of-a-kind garden art sales


Exciting Workshops and Events


Travel on tours to exotic places

Example Frame

Upcoming Events   



June 8-19
Overseas Tour: "[Quint]essential England for Gardeners: Wessex, The Downs, and Channel Coast"

Sorry, this tour is SOLD OUT
For more info on HPSO tours...


June 11
Garden tour: "Northern Exposure", HPSO & Garden Conservancy open day tour

Open to the public | Day Pass - $20 (HPSO members if purchased in advance), $25 (for non-members if purchased in advance), $30 on day of the event.
More info | Purchase a Day Pass now

Volunteers for the Northern Exposure tour are still needed.  Please volunteer now.  Questions about volunteering?  Contact Liz Wiersema.


June 16
HPSO After Hours at Xera Plants & Contained Exuberance @ Hyland Garden Design

Members only and their guests  |  Free Admission
Register now


June 24 & July 6 (2017)
Overseas tours to northwestern France: Normandy & Brittany

Open to the public | Now accepting reservations
More info 


 A wealth of gardening benefits and connections at your fingertips.
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HPSO & Garden Conservancy Open Day Tour

June 11, 2016, 10am-4pm

More info


Platycodon grandiflorus

Camellia hybrid

Helleborus 'Painted Double'

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