HPSW is a grass-roots educational organization interested in the conservation, propagation, dissemination, and use of hardy herbaceous perennials in the landscape. Our goals are to build an educational garden to demonstrate and maintain unusual varieties and cultivars, to perform plant trials, and to build test plots for perennials, emphasizing the conservation of old and uncommon varieties. We host meetings about specific plant types, garden design, and horticultural techniques. We assist in rescuing gardens and plants threatened by change in the urban and suburban areas of Puget Sound.
HPSW is a US 501(c)(3) tax-exempt non-profit organization.