To describe this as an ocean of grass is pretty accurate ... half a million square miles. How the Wild West Was Won with Ray Mears II, BBC 2014
Cut grass lies frail:
Brief is the breath
Mown stalks exhale
Long long the death ... Philip Larkin, Cut Grass
Corn: six thousand years ago early farmers in the Americas turn a weed into a cereal that produces more calories per acre than any other – with almost twice as many genes as a human being. Mankind: The Story of All of Us VII: New World, History 2012