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Join one of the West Coast's largest gardening communities—over 2,800 members strong! As a member of HPSO, you’ll gain access to our top-notch educational programs, a wide array of local private gardens, a diverse domestic & international garden tour program, our magazine & newsletter, our horticultural lending library, and discounts at local garden retailers. Plus, you'll meet other gardeners who share your passion.

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The Hardy Plant Society of Oregon, commonly known as HPSO, is a non-profit volunteer organization for all gardeners: beginning or experienced, amateur or professional. Founded in 1984 the Society currently has over 2,800 members throughout the Pacific Northwest in Oregon, Southwest Washington, and beyond.

Special notice: We are monitoring the Covid-19 epidemic regarding its impact on HPSO activities. At this time, the HPSO office is closed to meetings and visitors. Our Open Gardens program has restarted, mostly on an appointment-only basis. 

Follow Hardy Plant Society of Oregon on Facebook and Instagram to join our online community.

Members: Please read your weekly email for links to additional content, and be well and be safe!

Open Gardens

Open Gardens

Garden Travel

Garden Travel

Plant Sales

Plant Sales

Speaker Programs

Speaker Programs