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.
Apr 4 - Oct 24
Open Gardens by HPSO members
Members only | Free admission
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
- 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.
Portland Study Weekend: "Planet Garden: Gardening in Our Changing World"
Open to the public | Admission - $185
More info | Register now
HPSO Overseas garden tour: "A Grand Tour of Ireland"
More info | Sorry, this tour is full
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 >