Lovage is a perennial herb; the leaves taste a little like celery. I use them in stews and such if I don't have any real celery. They also are good medicinal plants- a dependable diuretic for the kidneys and gout, anti-spasmodic so good for menstrual cramps and gassy cramps,. A tea can be made by heating (don't boil) 2 teaspoons of chopped dried lovage in a cup of cold water. Strain and drink up to 2 cups a day
Lovage is also an excellent companion plant for everything in the garden except rhubarb (don't ask me how I know this)