Iris tridentata
Jim McKenney (Fri, 28 Jun 2013 17:16:04 PDT)

I've been given some seed of Iris tridentata from season 2012. The seed had been frozen until it had been mailed to me recently.

Should I sow it now under warm, moist conditions? Or is some other treatment preferable? 

Jim McKenney
Montgomery County, Maryland, USA, USDA zone 7, where a zillion lilies are blooming.