This is one of our most useful native ferns and a staple in the Northwest garden. Sword fern is tolerant of a wide range of soil types and sun exposures, from wet to dry, sun to shade. It is one of the few plants that will tolerate dry shade under the den
Lady Fern, Trillium, and Sweet Woodruff (My May Garden) - Shade Gardening
The native wood spurge, very tough evergreen Euphorbia for any shady conditions including the dry soils right under trees. Green leaves and yellow flowers in Summer. Useful addition to the woodland border.
Woodland Plants That Bloom in Dappled Light Under Trees