I bought a variety pack of allium bulbs around three or four years ago and planted them all together. I threw the package away and have no idea what varieties were in it. The only variety that ever bloomed is a drumstick allium. Since the other ones haven't bloomed by now should I give up and pull them out? Any recommendations for identifying the other varieties by their foliage? The leaves always come up and look like chives but no flowers.

Thanks for any help. These alliums are driving me nuts and I am thinking of just making room for something that actually blooms.