My friend pointed out to me, growing as a weed in my backyard, the plant called Common Plantain. I had never noticed it before. But it turns out that it is edible (the young leaves in salads or in soups and casseroles), and that it has many various medicinal uses. Part of learning to be self-sufficient means learning about and using wild edibles. Check out the info in these two websites--it's possible you have it growing in your yard as well!

http://altnature.com/gallery/plantain.htm

http://botanical.com/botanical/mgmh/p/placom43.html