Supposedly bulbs of a cornflower-blue daisy

by Anna
(Lex Park, Maryland)

Blue Daisy

I just received 25 "bulbs" of blue daisies. They look like very large black raisins and are hard. I questioned the seller re seed pod vs bulb, and was assured those were bulbs and to soak them in warm water and plant them now. Being in winter-cold Maryland, I am hesitant.
Does anyone have experience with this plant ? Thank you.

Doug says they sound and look like Anemone blanda (maybe a smallish corm) but the pic is A blanda if that leaf belongs to those flowers (pic is enhanced a tad as well) :-) . Check them out in this article