Friend you are wrong. Hay is harvested green. It says straw is the byproduct of harvesting wheat i.e. what your grandfather was doing. You could have wheat hay,

Friend you are wrong. Hay is harvested green. It says straw is the byproduct of harvesting wheat i.e. what your grandfather was doing. You could have wheat hay, but you would have to harvest early. No one is going to do that.