I have mentioned this before and even wrote 2 articles about growing seeds over Winter. I know I am in a different zone and grow some in my south window, but I also used to grow them on a shelving unit with shop lights:
Growing daylilies from seeds article:
http://garden.org/ideas/view/b...
Making a grow light shelving unit:
http://garden.org/ideas/view/b...
Maybe my two articles might give you some additional ideas on how to grow them over the Winter in your location. The one advice I can give ..... be careful NOT to over-water them in Winter. I also used a few drops of hydrogen peroxide in the spring water that I watered them with. It helps prevent root rot.
Just my .02 worth.
