Sempervivum Calcareum Greenii

Medium size speceie with brown tip. Green body and brown tip contlast won't change through the year. A variety from Baker (1870).
 
Sempervivums are toughest plants within the world of succulents especially for winter. They are extremely hardy (-15°C) torelaye for most UK gardens. Avoid too humid conditions in summer time (above 25°C) for their healthy growth.