Lilies (true lilies such as Asiatics etc.) can be planted just about anytime the ground can be worked. If planted too late in the season they probably will not bloom the first year but will most likely send up foliage at least. Daylilies are not actually a bulb, they do have tuberous roots that will store extra food/water. Daylilies can usually be planted at any point up til about a month before cold weather starts to move in. If you plant them just before it gets real cold they may still make it with mulch, but they do better going into winter with a good root system. If these are in bags the one thing you want to be very careful of is rot, plastic leads to condensation and if you have a daylily plant that has sat in that type of condition for awhile then chances are there are quite a few that are really rotting. If possible I would try to open any before you buy them to see if they look or smell bad.

Most lily growers figure it's always better to have the bulbs in the ground rather than anywhere else, no matter how late that happens to be. If they're in your unheated garage, they will freeze. (Well, they're happier frozen in the ground with the earth around them, than frozen in a box.) If they're in the house, they will be too warm, just about any place you put them.

Asian lily and day Lilly grow like weeds. My wife put lots in and I removed them because the bettels they attract .they will grow no problem right now. You can plant them now no problem. The lady at the garden center is wrong. We have not even passed annual last frost date in calgary yet. My lilies are about 2" sticking out now. You can put lillies in anytime. They are invasive and super hardy but the bugs they attract can take a liking to other plants and are gross little mean red bettels.

I'm not sure but I don't see why not. They force them to sprout and flower in green houses. Depending what temps look like this time of year where you are, you might have better luck planting them inside until they sprout. If they sprout they will probably just flower late. I went a head and planted my already sprouting bulbs anyway.