I think there is some confusion about ryegrass. Just because you have Ryegrass in a field, doesn't mean it was ever planted by man in that field. We have a "wild" strain of Ryegrass, in north AL anyways. The wild Ryegrass is Italian Ryegrass. It is a prolific seeder and will produce enough seed to overtake a field in a few years. We have it in every hay field we have. We spray our hayfields almost every year to kill it. It takes years to get rid of it in a field, even when spraying it with glyphosate ever year. Those seeds can lay dormant for years and years.

We plant ryegrass for grazing every year. It doesn't get much of a chance to go to seed.

If my people, who are called by my name, will humble themselves and pray and seek my face and turn from their wicked ways, then will I hear from heaven and will forgive their sin and will heal their land. 2 Chronicles 7:14