There are many wonderful sites on the web for finding detailed information for the sempervivum you grow. Who is the hybridizer, or person that introduced the plant? What year was it introduced? What is the parentage of my semp? Has it won any awards?
More sites will be added as we go. If you have a favorite reference site, tree mail me with the link.
A wonderful site to see what is going on in Europe with sempervivum. Use google translate to see in other languages: http://sempervivum-liste.de/