The Common Day Lilly is found in many a garden. They are reliable, beautiful , disease resistant and attract humming birds. They will come back every year with little care to brighten your late spring day. Each flower will open for only one day, than be replaced by another, hence the common name. There are many cultivars of Day Lily and they come in many different colors. Be careful with common names, many plants have Lily in their common name but are not edible. Lily of the Valley is a good example, it is a very toxic plant.
In many parts of the world Day lilies are considered a delicacy. All parts of the plant are edible, but the flowers are the part most used. The flowers are often found dried in Asian markets to be used as a soup thickener and to add to soups and stews.
My favorite way is to use the unopened flowers breaded and fried. Simply dip the flowers in egg and then in bread crumbs, flour or corn meal and fry in a little bit of oil of your choice. They make great appetizers and are a great addition to a Wild Edible Meal!