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 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  



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


May 30
Registration for 2016 garden tours to the UK begins
HPSO Travel Club members only; Registration for general HPSO members begins June 11 and to the general public on June 26  
More info 

  • Southern England, June 8-19, 2016
  • Wales & Galloway, June 21-July 2, 2016
  • Scotland, July 4-14, 2016

If you are an HPSO member, you may join the HPSO Travel Club by emailing us your request.


June 26-28
Portland Study Weekend: "Planet Garden: Gardening in Our Changing World"
Open to the public  |  Admission - $185
More info |
Register now


July 1-19
HPSO Overseas garden tour: "A Grand Tour of Ireland"
Members only
More info |
Sorry, this tour is full


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


 A wealth of gardening benefits and connections at your fingertips.
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Portland Study Weekend

June 26-28, 2015


More info >


Platycodon grandiflorus

Rose 'The Pilgrim'

Lily 'Electric Red'

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