Caliph's Hat (April) Caliph's Hat (April) Caliph's Hat (July) Caliph's Hat (August) Caliph's Hat Large, dark spring colour and perfect shape. £3.60 A super Houseleek - perfect shape and rich, dark colours. The deep colouring is retained through summer if it's cooler - the lighter, August, image was taken in the hot summer of 2018. Large, flattened, rosettes. Nicholas Moore (GB) 1977 Sent in 9cm pots as growing, established plants. Nicholas Moore was an interesting character - a poet, gardener and breeder of plants. You can read about his life at http://www.sempervivum-liste.de/node/132 We grow several of his varieties.