Isn't it supposed to be a good bee plant, makes a pretty hedge (apparently), can be used to treat bruises, makes essential oil for same, you can eat it in soup and salads and to accompany your veggies. Good for coughs and catarrh. Likes light soil and full sun. It's supposed to be a good companion plant as it is a natural insect repellant.
There, you knew all along why you'd grown it :)