No. If you live in a cold climate, only cut the stems down to eight or ten inches in the fall, so that winter-kill will only effect the top portions of the stems, and so that the remaining stems can trap snow, which will insulate the crown of the plant. In a warm climate, cut the plant down to about one third its summer size, and then in the spring trim off any part of the stem that has died.
Cut off the old flowers the foliage will die back naturally in the Autumn.
Lilies are beautiful in the garden or as cut flowers.
In the fall.
I would call trout lilies more of a wild flower rather than a ground cover.
It is best to plant lilies in the fall but you can plant them in spring.
They usually fall to the ground.
Yes you can plant lilies. Easter lilies can be put out in the garden when it is warm enough outside and they will bloom in the summer. Lilies grow from bulbs which are generally planted in the early fall.
If you cut the main flower back to the buds on the stem you will get a second flush of flowers.
Tiger lilies are a bulb, and will go dormant. The leaves will dry up and turn brown. When they do, it is safe to cut them all the way back. They will come back next year. If there are flowers that are wilting, you can deadhead them throughout the growing season.
In the fall, you can trim your peonies down to about three inches above the ground, according to the NC State Web site, below. Cut off the flowering stems after they have flowered and give a top dressing af fertilizer and then ignore,
What happens to dead leaves that fall to the ground
Florist lilies are usually subtropical natives, and will open when exposed to heat. Cut the stems, submerge in warm (not hot) water, and place in a warm room, or near a constant source of heat. Remember that opening quicker also means wilting quicker!