HPSO:  Celebrating 33 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 2400 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


April 1 - October 15
Open Gardens - Visit nearly 100 of our members' gardens
Members only 
More info on the Open Gardens program


May 18
"After Hours" at One Green World
Members only  |   Free Admission

More info


June 24-July 6
Overseas garden tour to Normandy, France
Members only  |  Sorry, this tour is filled.
More info on great tours


July 5-16
Overseas garden tour to Brittany, France
Members only  |  Sorry, this tour is filled.
More info on great tours






 A wealth of gardening benefits and connections at your fingertips.
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A Gift Membership is always a welcome gift for that special gardener:

Gift Membership



Alstroemeria cultivar

Dahlia cultivar



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