Sweet Woodruff

I can't remember where I got a little pot of this plant, or when, but it now grows amongst the bigger plants all over the beds in our front garden.
It's scientific name is Galium Odoratum. 
You can plant it almost anywhere, but it is best with shade in the hottest sun. It spreads rapidly, but is a great weed-supresser! It always looks pretty, like a white froth amongst the greenery, but excessive growth is not  problem, as you can just pull it out by hand!
My Plants for Places book says: "The whorls of brilliant green leaves, which develop a strong scent of newly mown hay when dried, are lovely woven into garlands" !!
I haven't tried that!