Centranthus ruber, from which this cultivar derived, is native to the Meditteranean region and Europe.
Centranthus ruber 'Albus' or white valerian is a white-flowered cultivar of Centranthus ruber. It is a perennial known for its showy white flowers that readily self-seed. Their fragrant flowers are small and star-shaped in dense clusters. They grow to be about 3 feet tall by 1-2 feet wide.