It's part of it's cycle, usually sempervivums flower on their third year. However, on occasion one has reason to try to save a particular plant. As in: my favorite sempervivum Red Rum which I just bought this year and don't have a lot of, for some reason decided to bolt and flower.
The mother plant dies after setting seed, so I would lose my favorite, that I just bought!
So we are doing a bit of experimenting to see if we can somehow save those plants that flower prematurely.
Lynn, on your Ali, are you going to behead the offsets? They appear to be bolting too.
I didn't plant the flower heads, I just threw mine in the yard.