HPSO:  Celebrating 31 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 2450 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  



Apr 4 - Oct 24
Open Gardens by HPSO members
Members only  |  Free admission



August 11
Gen(i)us Program: "Keeping the Color Coming: Late Summer Flowers for the Garden" with Dan Heims
Open to the public   |   Admission - $5
More info |
No need to pre-register; please pay at the door


August 29
HPSO/Garden Conservancy Open Garden Tour: "Extending Your Garden Season"
Open to the public   |   Admission - $7/garden or $35 for booklet of 6 tickets ($23/booklet for HPSO members if purchased in advance)
More info | Purchase tickets


September 12
Fall PlantFest & Fall Program: "Stunning Ecological Plant Combinations" with Claudia West
Open to the public   |   Program admission - $10 (members) $20 (non-members); PlantFest is free
More info |
Register for the program now  | Applications for nurseries are now available



 A wealth of gardening benefits and connections at your fingertips.
learn more >


Member Login

Membership expired?
Renew >


HPSO-Garden Conservancy

Open Day Tour 

August 29, 2015

More info & Tickets>


Platycodon grandiflorus

Rose 'The Pilgrim'

Lily 'Electric Red'

powered by MemberClicks