Sempervivum Mayfair Hybrid ..... Mayfair Hybrid with its burgundy brown center and green outer leaf tips is attractive summer and winter. Tufts of white cilia at the tips of the leaves enhance the over all appeal. The medium size of this sempervivum makes it suitable for so many sites and application. This semp was originally called Kolaga's Mayfair. Hybridizer W Kolaga (U.S.).