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  


December 5
Volunteer Appreciation Party

HPSO volunteers only   |   Free Admission 
More info


January 9
Special workshop with Panel Discussion: "The Joy of Opening Your Garden"

Members only   |   Free Admission  
More info coming soon


January 10
HPSO Travel Club: "Madeira: The Garden Island of the Atlantic"
Members only   
More info   |   Register now


January 24
Winter Program: "Imagining & Conserving American Gardens" with Bill Noble

Open to the public   |   Admission: $15 (Members), $20 (Non-members)
More info  |  Registration opens soon 


April 9-10
Hortlandia: HPSO's Spring Plant & Art sale
Open to the public   |   Free Admission   |   More info 

Quilt challenge information   |   Quilt challenge online entry form  
Nursery vendor online application form    
Artist vendor online application form



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


Member Login

Membership expired?
Renew >


Hortlandia 2016

April 9th-10th

Save the date!

2nd Annual Quilt Challenge

More info>


Platycodon grandiflorus

Camellia hybrid

Helleborus 'Painted Double'

powered by MemberClicks