I have a LOT of I think Bulbous Buttercup (Ranunculus Bulbosus). I let them grow because they are so pretty and cheerful looking, but now I am pulling them out. Some of them have bulbs in their roots, I found some as big as 1 1/2 inches!----Long time ago, in the 1980's I bought the fancy colored ones, they are beautiful--but they died----They looked like the old fashioned roses but smaller and translucent.