Santolina chamaecyparissus is a wonderful small shrub which has pretty button45like bright yellow summer flowers with silvery foliage which continues all year round this hardy shrub is drought tolerant and thrives on neglect33 an excellent choice for hedging or great for ground cover too it can also add charm and character to rockeries and themed gardens too cotton lavender is a perfect choice for any difficult full sun positions due to its drought tolerance and low maintenance