My daylilies get no more than half day sun and they are doing fabulous this year. I took the advise of growers here on ATP and added alfalfa pellets last fall and again this spring along with my milorganite, and I couldn't be more pleased. We also got a lot of rain this spring and I keep them well watered. They also have a lot of competition from an oak woods that borders all the gardens. This may not be the norm, but it's what has happened for me.