Evening Primrose

An erect stem approaching 1 to 1.5 metres heigh. It is roughly hairy in texture, the hairs with reddish blistering or glandular bases. The crinkly leaves are up to 15 centimetres long.
The inflorescence is a showy spike of many large yellow flowers. When in bud the long red sepals are visible. When in bloom each flower has four bright yellow petals up to 5 centimetres long