The official advice is to lift in autumn, dry them and plant out in spring. That, I guess, is because they are not reliably hardy (Zone 9). But if you can plant out dry corms in spring, I can't see why you can't plant out freshly lifted ones, assuming they have not perished in the cold winter. In any case, you don't have much to lose. Better find out now, and buy some more if you need to.