Yellow toadflax has a long history of herbal use. It acts mainly on the liver and was once widely employed as a diuretic in the treatment of oedema. It is little used now, but undoubtedly merits investigation.

Succeeds in a moderately good well-drained soil. Grows best in a neutral to alkaline soil. It prefers a sunny position but also succeeds in semi-shade. A very drought resistant plant once established, it can be grown in a drystone wall.

A good bee plant.

Sow early spring in situ.

http://practicalplants.org/wiki/Linaria_vulgaris