If you can not stay on top of turning your pile often they are hard to compost. It always seems like the ones we don't want are the aggressive growers and I promise you instead of a compost pile you'll have a mound of daylilies in a few months if you dont keep it hot.
Karen aka Kousa came up with a great idea of covering the pile with a tarp. I think this would work great but I think it will take a full year for them to die. I've heard of plants getting moved and stored in bags for 6 months and still survive. I've tossed 2 and 3 fan seedlings in empty plant pots with the intention of pitching them and find them a month or so later with all the tall foliage gone but 10 or 12 new fans sprouting from the crown with no soil in the pot.
Edited to add I dont use my compost made here for my daylilies I use it when planting new fruit trees. I buy compost from a company called palmetto supreme by the dump truck load for my daylilies. You dont want to be spreading anything using compost dirived from the same plants you are trying to grow.
