Daylily flower power! Late season care for the jewel of the garden | MSU Extension | Daylilies - hémérocalles | Scoop.it
On the contrary, the humble daylily (also known as color queen of the summer perennial display) tends to be a hungry plant which will benefit by a mid-summer top dressing of nitrogen-rich fertilizer."

Read further the article of Rebecca Finneran, Michigan State University Extension