I had an area that I needed to have some Clean fill brought in. I followed it up with clean topsoil,set the seed and rolled. I noticed that it is taking a Looong time to come up even with the hay on top and the irragation running in 10 min spirts. It has been Humid and on/off rain so I held up on running the irragation system (some areas i have mushrooms), but not in this area. I walked out this morning and found the spots where I reseeded and not coming up, I found a grayish web like substance? I hit it with Bayers Grub control and watered it in for 5 mins. When I seeded I used Lescos Perrenial Turf Double eagle rye grass and used Andersons Herbicide 12-24-1 with 35% Siduron. Anyone have a clue why this is taking so long to catch and also (most importantly) what the grayish webs are.... Its driving me nutz!!! Thanks as always!