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   


July 23
Fergus Fair!  Lecture and afternoon reception with Fergus Garrett of Great Dixter

Open to the public  |  Admission (lecture) - $25 members/$30 non-members
More info on the lecture   |   Pre-registration is closed; check at the door for available seating
Open to the public  |  Admission (reception) - $65 members/$85 non-members
More info on the reception    |    Pre-registration is closed


July 27-29
Special tour: "Custom View of Seattle/Tacoma Gardens"

Members only | Sorry, this tour is now filled
More info 


August 7-10
Special tour: "Discovering Vashon Island & Its Uncommon Gardens"

Members only | Sorry, this tour is now filled
More info 


September 8
HPSO After Hours: Pomarius Nursery

Members only | Free admission
More info 


September 17
Fall PlantFest with special guest lecturer, Richie Steffen

Open to to public | Admission - $10 (members), $20 (non-members)
More info  |   Register now


 A wealth of gardening benefits and connections at your fingertips.
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Alstroemeria cultivar

Dahlia cultivar


Wisteria sinensis 'Caroline'

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