I had a handful of daylilies-newly planted last fall, that have heaved up out of the ground and I do mean completely out. I can't believe how much they have moved. I will have to replant them entirely. My soil is somewhat heavy, not clay really, but just not well draining either. Some of these had straw over them at the beginning of winter but was afraid to mulch over them too much for fear of crown rot if it stayed too moist. I think some of the straw must have blown off also. I have never had so much trouble with heaving (well I have with iris, but that is a little different than dl). So I'm wondering what I need to do differently next winter to keep this from happening again. Did the heaving most likely occur due to not having enough mulch over them? Or do you think I need to add compost to the soil? We have long wet winters that swing from 60 one day to a foot of snow the next. We have had 0F at night and then a few days later 50F. Just crazy, but most winters are like that. So what should I do to fix this?