Centranthus ruber Coccineus

Centranthus ruber 'Coccineus', or red valerian, is a beautiful clump-forming perennial with remarkable red flowers. It has an exceptional flowering period, even more so if you prune the dry stems. It spreads and requires little care.

It easily self-seeds, and sometimes settles in curious places like a crack in a wall. It prefers dryness and sunlight. If you don't want it to spread, simply cut the faded flowers before they form seeds.

For a pretty display, plant it alongside its cousin, the white valerian.