Here in rural Northern California, Wachendorfia thyrsiflora is a bit of a weed (though not of the naturalizing sort). Seedlings appear unexpectedly not too far from the parent clump. The seedlings need removing so that they do not overtake their neighbors. I like to think the leaves are bold rather than coarse, though I am not particularly fond of the black tips of the leaves. While I grow mine on the northeast corner of my home where the soil stays more moist, I can't keep my garden consistently moist in our Mediterranean climate. This does not seem to slow the Wachendorfia much. My plant is just finishing its bloom with its foliage hidden in front by a willow (Salix purpurea 'Nana') and and with a background of Berberis vulgaris 'Crimson Cloak'. Clematis 'Royal Velour' meanders around and amongst the shrubs. It's a very colorful spot. Brook Klehm Sebastopol California, USDA zone 9, but on the cold side of 9.