HPSO:  Celebrating 30 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 2300 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 5 - October 26
HPSO's open garden season
Members only | Visit over 100 private gardens!
Join HPSO now to get this opportunity

September 8-16
Overseas tour: "Noble, Noteworthy, & New: English gardens from London to the Welsh Marches"
Members only | Sorry, this tour is SOLD OUT
More info

September 16-23
Overseas tour: "Princely, Public, & Private: Gardens of Berlin & Potsdam"
Members only | Sorry, this tour is SOLD OUT
More info


September 20
Fall PlantFest: Plant Sale & Lecture Program with Gary Lewis - "Weird & Wonderful Plants"
Open to the public | Admission: Members - $10, Non-members - $20
More info |
Register now


October 19
Annual Meeting: "The Peripatetic Gardener: Now Rooted in the Pacific Northwest" with Bob Hyland
Members only | Free Admission
More info |
Registration opens September 1

October 26
HPSO Travel Club program: "A Barbarian in the Gardens of Kyoto" with Dave Eckerdt
HPSO Travel Club Members only | Free Admission  |  This event is now FULL.  |  Contact the HPSO office if you wish to join the Travel Club  |  



 A wealth of gardening benefits and connections at your fingertips.
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 The fall plant sale is at



September 20th!

More info >


Platycodon grandiflorus

Rose 'The Pilgrim'

Lily 'Electric Red'

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