An upright biennial, Oenothera biennis features light green to olive green leaves with no flowers in its first year but features lemon yellow four-petaled flowers in the second year. Each flower opens at dusk and closes the next morning before it gives way to narrow seed capsules.
An upright biennial, Oenothera biennis features light green to olive green leaves with no flowers in its first year but features lemon yellow four-petaled flowers in the second year. Each flower opens at dusk and closes the next morning before it gives way to narrow seed capsules.
May self-seed. Tolerates part afternoon shade and some drought. Best in average, well-drained soil.
