There is a really cool garden in Brush Prairie just north of Vancouver. It has several different sections all with different types of plants and flowers. Pam Long turned me on to this gardent.
The Wildlife Botanical Gardens in Brush Prairie...
The Wildlife Botanical Gardens are a cohesive blend of specialty theme gardens, spread over three acres in Southwest Washington. The gardens, and devoted gardeners, demonstrate and teach gardening concepts that attract birds, butterflies, hummingbirds and other wildlife to residential gardens. Come visit the Wildlife Botanical Gardens year-round and enjoy the unique beauty each season has to offer!