Someone who grows them has this to say:
"http://www.robsplants.com/plants/BukinCabul
Grown for its rosettes of blue-green leaves with white veins. The plant is monocarpic (dies after flowering), but may multiply by forming offsets if it is not allowed to complete its sexual reproduction cycle (by removing flowers as they appear). On the other hand, some say it reseeds well. Probably all depends on its setting... Native to Turkey.
[email protected]<
[email protected]>"