Seeding--particularly renovation over old grass is not an exact science that is for sure. There are just so many variables. I am now thinking an extra step after application of the seed into partially loosened soil would be helpful. An additional raking or dragging to mix or incorporate the seed into the top 1/4 inch of soil would probably be helpful. Dragging some fence behind a lawn tractor would be quick and easy. Does anyone have side by side comparisons or experience in renovation seedings? The risk with rain is that, the seed may begin to germinate due to soil moisture or a light rain--and then die if no additional rain falls. Like last night...we were supposed to get rain...missed us by going 50 miles north.