• WOODY PLANTS include perennial trees and shrubs whose hardened stems persist year-around.
• WILDFLOWERS include non-woody perennial and annual species of native flowering plants.
• HERBACEOUS species include perennials and annuals with non-persisting stems and/or foliage.
• ADVENTITIOUS species include those introduced to this region from other regions of North America or from other continents, that have a demonstrated ability to re-seed themselves and persist for one or more generations in our region, on disturbed ground. They are offered here as a service to herb growers and ornamental horticulturists; not generally suitable for native landscape use.

Latin nomenclature used here mainly follows the 2018 Flora of the Pacific Northwest, Second Edition (Hitchcock and Cronquist, David Giblin, ed.), and/or the 1999 edition of Hortus West (Western No. America Native Plant Directory & Journal); common names are in mostly from Flora of the Olympic Peninsula (Nelsa Buckingham et al, 1996).