Apparently, yes. Almost all of our breakfast cereals are made of grass. How do I know? Agriculture Collection told me.
It turns out cereal crops are grasses that produce edible grain. Oats, barley, corn and wheat are all different varieties of grass and are all descended from the same botanical species.
This new electronic resource answers all sorts of questions. It covers practical aspects of farming as well as cutting-edge scientific research in horticulture. If your interested in working the land, growing crops or raising animals, this is ideal resource to dip into!