Well I just returned from Michigan's upper peninsula. Looks like Perennial rye grass has taken over the new white clover plot I planted last august. I had sprayed with roundup in June and in mid August tilled and planted with clover blend and a Cereal rye nurse crop. I mowed the Cereal rye down but the clover looked very sparse. I just could not believe how aggressive the perennial rye grass was. It had pretty much taken over the whole plot. When I get back up there in August I may spray it with a grass specific herbicide and see if it can be saved or I might just zero it out with roundup and start that plot over again next year. Anyone else have trouble with Perennial Rye grass?