three weeks ago i put a 50 lbs bag of winter rye out in this yard that i do every thursday. one week later i put another bag out and today when i went to do the yard i noticed the winter rye has still not come up. there is a few sprouts along the edges of the grass but thats it. i thought maybe the problem was my customer was not watering the grass but i talked to him today and he told me he is watering the grass so i have idea what the problem is. can somebody please tell what the problem may be?