Both leaves and roots can be eaten, the leaves either fresh in salads or lightly boiled, the roots boiled in soups. Opinions differ as to whether either make very good eating, however. Although it is sometimes reported to have medicinal properties, there is no basis for this view, which is almost certainly due to confusion with true Valerian.
A native of the Mediterranean region, Centranthus ruber has been introduced into many other parts of the world as a garden escapee. It is naturalised in both Great Britain and the United States. In the US it can be found growing wild in such western states as Arizona, Utah, California, Hawaii, and Oregon, usually in disturbed, rocky places at elevations below 200 m. It is often seen by roadsides or in urban wasteland. It can tolerate very alkaline soil conditions, and will grow freely in old walls despite the lime in their mortar.
See also: Flower Malaysia, Malaysia Flower, Florist KL, Florist Penang