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.
HPSO winter botanical display at the Portland Yard, Garden, & Patio show
Open to the public
More info | Volunteers needed - Sign up now
HPSO After Hours at Cornell Farm
Members only | Free Admission
More info | Register now
Gen(i)us Program: "Winter Flowers, Winter Fruit" with Dorothy Rodal
Open to the public | Admission - $5
Hortlandia: HPSO's Spring Plant & Art sale
Open to the public | Free Admission | More info
Quilt challenge information | Quilt challenge online entry form
Artist vendor online application form
Now accepting registrations for Hortlandia volunteers here.
A wealth of gardening benefits and connections at your fingertips.
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Save the date!
2nd Annual Quilt Challenge