Planted a new lawn 2 weeks ago in NJ. i brought in 5 yards of top soil, spread it and planted seed threw down some starter fertilizer and covered with Penns Mulch. We have had alot of rain here...i mean alot. 2 days after planting we got a huge down pour. Most of the mulch washed away or disintegrated. I do have some grass coming up now but its spotty. Temperatures have been very cool too. I was wondering if I should wait longer or if I should overseed now. And if I should overseed how do I go about doing it? Lightly rake the area dn throw seed? I dont want to disturb the grass that is growing.