After reading Irawons post about OP seedlings I thought I'd share what I've been doing with some of mine. I started seeing seedlings in my garden last year, they seem to all be blue/green. I've been experimenting with planting them in odd locations, like downed tree stumps. If they make it great, if they don't I'm not out an expensive hosta.
This first one I planted last year, so it made it over the very cold winter just fine. There wasn't much space to plant into, just stuffed in some planting media and compost. I imagine the wood holds on to moisture and as the wood decomposes, the hosta roots are finding a place to be.