When people use rocks in the landscape they seldom think farther into the future beyond next week. You are the poster child for rocks gone bad.

I am the main guy against rototilling the soil, but in your case, if it was me, I'd be rototilling and screening. Resign yourself to starting over from scratch. It will take some time before it comes together, but armed with the information you have, you know it will. So I'm suggesting you develop a thick skin against the presence of some weeds and know that they will ultimately fail to thrive under the proper care you will be giving to the lawn. You might want to hire a landscaper to come in and get rid of the rocks for you. Your choices are to do it yourself over the rest of the spring, summer, and into winter; or you can hire a landscaper with a tractor to come do it for you. Be sure he understands he is screening out all the rocks and not just doing a soil surface prep (scrape and go). It might take all week for a crew of six people working 8 hours/day. Get 3 estimates.

The landscape fabric is no barrier to anything but the rocks. Weeds will likely come right through it. Weeds in rocks are a problem (to say the least). I'd haul the rocks off.

What is your shade situation?
Are you willing to water when needed?
Fertilize?
Mow?

First thank you for your help. The backyard is in direct sunlight about 9am to 4pm. I am willing to water when needed. I bought a battery operated timer for the hose spigot, it can water up tp 24 times a day. It worked well for me for the front yard. I also bought Scotts turf builder starter fert. and scott's sun/shade grass seed.I will mow when needed. Right now i am, unemployed so I have the time. I know its a lot of work, but i'm no slouch. Plus I landscaped for 4 years, so I know a little bit.

So back to the rocks. There was no growth under the landscape cloth. The rocks are about 6 to 9 inches deep. What if I were to take the rocks and cloth up and put down preen? I will try an post some pics tomorrow.

Okay, here's what you do. I would still consider hiring someone if financially possible. If not, get the tiller in there and get going removing rocks. Also get it in your head that you will not have a lawn this season. There is no grass you can seed in that will survive the summer heat at this point. Resign yourself to taking good care of your weeds and prepare for a renovation this fall. You will have most of the work done already just from digging out the rocks.

I am a huge fan of the Elite varieties of Kentucky bluegrass. This forum used to be the 'go to' forum for KBG but those people were pushed away and ended up starting another forum. With your sun I think you could do KBG.

I'd like to reemphasize that this is a special case for the use of a tiller on a lawn area. Worse than any weeds that will pop up from tilling is the fact that you cannot maintain an even bottom level when you till. When you level the surface after tilling you will have varying depths of fluffy soil between the level surface and the uneven 'under' surface. When that fluffy soil settles three years from now, it will settle to the shape underneath. Then you will have a leveling project on your hands. But I don't see another way to get the rocks out of the landscape.

Waiting for the picture.

Here is picture 1 of lawn

Here is a link that might be useful: picture 1

here is picture 2

Here is a link that might be useful: picture 2

here is picture 3

Here is a link that might be useful: picture 3

here is picture 4

Here is a link that might be useful: picture 4