I just cut down 75 arborvitae, cut down other trees, prunned and removed bushes and, well, just basically did MAJOR YARDWORK! The chipper shredder did a great job.........I now have 15 yards of much in the driveway. Some of this has started to decompose already (I wish I could store it there until it finished cooking..........). However, I need to park my car in the driveway (the dilemma). I don't want to give this stuff away, but I have no place to store it. I need to rototill the yard anway, can I just spread this around and till it into the soil? Will this help my soil? Or, should I try to store this stuff and let it cook and then put it as a top dressing? I don't know, it has some pretty large sticks (branches) and I want to plant a lawn in the bakyard. I want to plant a lawn, and that is why I thought it would be nice to mix it in with the soil, which seems kind of clay like. Not sure, I am new to this. My last house only had flower beds. I have never planted a lawn before. Any tips? Thanks.

I would try to make sure any large pieces were not included or chipped to make smaller. I'd also apply a starter fert after seeding just to be on the safe side (re: the N issue). 15 yds is a LOT - use only what you need to improve the soil in the new lawn area and use the rest to mulch planting beds or to help prepare new planting beds.