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


September 16
Fall PlantFest with guest speaker, Sean Hogan
Open to the public  |  Admission - free for PlantFest; $10 for lecture (members), $20 (non-members)
More info  | Register now


October 8
Gen(i)us Program: Hardy Cyclamen with guest speaker, Robin Hansen
Open to the public  |  Admission - $5
More info  | Register & pay at the door


November 5
Annual Meeting with guest speaker, Alan Mandell
Members only  |  Free Admision
More info coming soon  | Registration opens October 1


November 9-17
Overseas garden tour: "Portugal's Horticultural Treasurers"
Members only  |  Sorry, this tour is now filled.
More info on great tours



 A wealth of gardening benefits and connections at your fingertips.
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