Oenothera macrocarpa
Missouri Evening Primrose
Gets its common name from being a Missouri native plant which occurs in the Ozark region south of the Missouri River. Typically grows 6-12" tall and features very large (3-5" across), solitary, 4-petaled, bright yellow flowers which open for only one day. Long spring to summer bloom period. Narrow shaped leaves. This species was formerly called (and is still often listed for sale as) Oenothera missouriensis.
Height: 9-12 Inches
Spread: 12-18 Inches
Zone: 3
Full Sun
Foliage: Green
Bloom Color: Yellow
Bloom Time: May-August
Deer Resistant: Yes
Evergreen: Yes