Oenothera howardii is a Rocky Mountain perennial with large, showy yellow flowers that open nightly, fading to orange. It thrives on dry, rocky slopes, attracting.
Above information is sourced from Wikipedia
© dleterne (CC-BY-NC)
© (c) Matthew Gerke, some rights reserved (CC BY)
© no rights reserved
© Robert Potts − EOL
© (c) Jared Shorma, some rights reserved (CC BY)
