A virtually completely hardy bromeliad, rarely affected by frost, even here. Quite extraordinary in flower when the central leaves of the dark green rosettes of very thin, toothed foliage turn bright scarlet before the fat cluster of sky blue fleshy flowers open. This forms a domed evergreen, grassy clump. Grow in reasonably well drained soil in sun or part shade, though I have a clump that survived -14c three winters on the trot in normal garden loam, and therefore to me this is virtually indestructable by frost.