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

April 26 - May 7
HPSO Overseas Tour: "An Andalusia Odyssey"
Members only | Sorry, this tour is SOLD OUT
More info on tours

May 7 - May 19
HPSO Overseas Tour: "Portugal in the Springtime"
Members only | Sorry, this tour is SOLD OUT
More info on tours

May 10

Special Workshop: "A Rabbit's-eye View" with Noel Kingsbury
Members only | Admission - $65, limited to 30 participants 
More info
  |  Sorry, this event is SOLD OUT


May 18
Spring Program: "Planting: A New Perspective" with Noel Kingsbury
Open to the Public | Admission: Members - $20, Non-members - $25, Students - $10 
More info
  |  Register now

May 19 - May 25

HPSO Overseas Tour: "Madeira: The Garden Island of the Atlantic"
Members only | Sorry, this tour is SOLD OUT
More info on tours

June 28

HPSO & Garden Conservancy Open Day Garden tour: "Within the City Limits: Minimum Space - Maximum Results"
Open to the public | Admission is $5 per garden (or buy a book of 6 tickets for just $25)
More info | Sign up now to be a volunteer




 A wealth of gardening benefits and connections at your fingertips.
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Garden Conservancy
& HPSO annual
Garden Day Tour

June 28, 2014

More info>

Purchase advance tickets>



Platycodon grandiflorus

Rose 'The Pilgrim'

Lily 'Electric Red'

Leucanthemum hybrid

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