In my area (Southcentral PA, Zone 6b), dill grows like a weed and it comes back...reseeds itself as an annual. You might want to try simply casting some seeds on prepared ground once the weather warms up a bit and see what happens. I've found dill to be a very easy, persistent annual herb that requires no real work at all. It sometimes comes up where I don't want it and then I simply transplant the seedlings when they're a couple inches tall. Often the simplest method is the best.
