Just about anytime you transplant a daylily, the leaves will yellow. Most daylily growers are aware of this. Cutting back the foliage helps the plant adjust, so it's not trying to feed all that foliage while it roots in. I often dig and divide when they're in bloom so I can be sure of what I'm digging. Sometimes, things get mislabel (thanks to my furry companion who kicks markers away), so dividing when they're in bloom insures that my trader gets exactly what I say she's getting. Some folks say you shouldn't dig and divide in mid summer either. They swear the daylilies will die. But I've been doing it for years with no problem. Daylilies are so darned tough. NancyAnn

I have found that my tropicana does better in shade. But it takes longer for it to bloom. I have a couple other dark leaves that I also put in afternoon shade and the leaves are gorgeous but again this makes them slow to flower. I guess it is what look you are going for. I grow the cannas for the leaves I am not that impressed with most of the flowers.

Frank, After reading your OP, I think you are definitely talking about daylilies, since you said you already cut down the stems (which are called scapes on the daylily plant.) Since you still have foliage growing, you indeed have daylilies. If you cut true lilies back to the ground you would have no foliage left, since the foliage on a true lily grows from the lily stalk. As was mentioned by daylilydayzed, daylilies do not grow from bulbs - only true lilies do. True lilies should be trimmed (after blooming) so that 2/3 of the stem is still standing. Then the stalks are cut back to the ground in fall, after all foliage turns brown. But your question is about daylily foliage, and I'm getting off subject. It appears to me that different people cut back their foliage at different times, depending on their location/pest problems/disease problems. Here in my zone 5, I leave all daylily foliage on the plant throughout the winter, because it helps insulate against freezing temps. I rarely have pest or disease problems, so I'm not worried about the dying & browned foliage surrounding the crown. In the Spring I try to remove as much of the dead foliage as possible. However, if I don't get around to removing it until the following Fall, (because of my own laziness), the plant doesn't suffer ill effects. the new foliage finds it's way through the old dried up leaves just fine - it just looks unsightly, if located in the front of a border/garden. Julie

PBF (Purple bottom foliage) has nothing to do with the colour of your flowers.If you go to my blog you will see an Iris Mystic Melody which shows good PBF. As many as 15%-20% of irises can carry this genetic trait Hope this helps Here is a link that might be useful: HERITAGE IRISES IN NEW ZEALAND