I put the seed heads ?bulbils? in the ground last fall, they came up(yes like thin grass blades).
They grew well this spring and they had heads curling under.
I wanted that area to plant something else, so I dug them up and they had nice small bulbs(thumb sized bulbs with several cloves) and good taste. The ones I pulled a month ago had no taste(no seed heads).
Still I think I pulled them too early, because the seed heads are a little immature.