Native Plant Society of Oregon – Oregonians live in a state with exceptional natural beauty and diversity that includes alpine lava fields to coastal sand dunes. For over 40 years, members of the Native Plant Society of Oregon have been visiting the wild places of Oregon to enjoy, conserve, and study its natural vegetation. Founded in Portland in 1961, NPSO has grown to a statewide network of 13 chapters and over 1000 members.

North American Native Plant Society – NANPS was founded in 1984 by a small group of dedicated conservationists as the Canadian Wildflower Society. We have since grown to include hundreds of members throughout North America.