Organic Diffuse Wallflowers (Erysimum Diffusum) Erysimum diffusum is a BIENNIAL/PERENNIAL growing to 1.2 m (4ft). The flowers are hermaphrodite (have both male and female organs) and are pollinated by Insects.

Flowers are in rounded clusters at the top of the plant and the tip of stems arising from leaf axils in the upper plant. The blooming stems elongate as the plant matures, with blooms just at the top and fruit developing below.