The 'Siskiyou' Primrose (Oenothera speciosa 'Siskiyou') is a long-blooming and easy-care cultivar that can form a dense mat of lance-shaped leaves. The dark-veined, rose-pink flowers fade to white in the center and feature a greenish yellow throat. They are showiest in late spring and summer, but plants will rebloom if cut back as the flowers fade.
 
Height: 1 foot
Width: 18 inches
Full Sun