I also recommend:
Prairie Moon Nursery out of Winona MN (I too can't post a link, too new here!)
I've had luck ordering from them in the past. Items arrive quickly and in good shape. I've ordered the wild ginger for a shaded area in my space. I've also ordered their wildflower seeds for a wedding gift that the couple say are now doing wonderfully and in bloom surprising them with what has come up.
Also with lily of the valley(or any plant for that matter) you may want to read up on toxicity to pets.
