Oenothera elata is an evergreen species of Oenothera known by the common name Hooker's evening primrose. This California native is found growing along streams and in wet places. very showy and easy to grow. This very showy Evening Primrose commonly grows over three feet tall (sometimes to five feet) and has 2-3+ inch wide bright yellow flowers. It also has a half dozen or more main stems  vertical and leaning outward  so it is very wide and even more obvious.  Flowers fade to orange with the heat of the sun. Does well near coastal areas. Hardy  it does well as a background plant with some moisture and reseeds very well.Introduced into cultivation in California by Theodore Payne.