I dug half of my stock of lilium specium var "clivorum" today and replanted to other places in the yard. This stock was planed near our a/c unit and had to be moved. They grew in shade and became very long and would fall over and break if not stalked (which I typically forgot)
I found 4 very large bulbs (the size of tennis balls) and a number of medium and small bulbs plus countless bulblets, of course.
These were all from 3 small bulbs planed (the size of golf ball)