Erythronium dens-canis is adapted to areas with moist/wet summers. I know of one naturalized population here in the greater Washington, D.C. area. I ordered some of these from Odyssey Bulbs years ago, and each one came in its own little zip lock bag with a bit of packing medium. Every one grew. That's how they should be packed. Dealers who treat them as tulips and expose the bulbs to dry air are not your friend. The western American species on the other hand are adapted to dry summers, and their bulbs in my limited experience seem to take to brief drying well. Know your source or take your chances. Jim McKenney