how deep should I rototill my old grass before putting in new grass?

Answer 1

It may be better if you can rent a sodcutter and remove your old layer of grass and sod in order to prevent weeds and the old grass breaking through. I tilled a flower bed about 8-12 inches deep and still had residual grass growth through a weed barrier. Very annoying when that occurs. If you have the time, I would remove it completely to make sure.

Answer 2

If I was using the exsisting lawn I'd make sure I use round up first let the old grass die then rototill. If your redoing the lawn I'm sure there is a reason. Weeds, uneven ground or something. Get a fresh start by getting rid of your old problems first. Grass is a fierce root system and will come back if it is because you have weeds in your lawn.

Answer 3

Tough question
If you can strip off your old lawn like sod, do that first
Of course, if your lawn was doing that good you probably don't want to roto till. If you lawn is dead and you will be reseeding or laying new sod, 6 inches is deep enough. If you are truning over weeds to get rid of them let the tilled ground stay open one month, repeat tilling if weeds grow, plant frass in fall

Answer 4

Remove existing weeds or turf, roots and all. (Tilling old sod in will leave lumps in the lawn's foundation and create uneven settling as the old organic material decomposes). Cut old turf into strips with a power edger and roll it up, or break turf/weeds up and remove with a shovel or spade. Loosen existing soil and remove any rocks or other chunky material, down to 8-12".

Answer 5

I was always told about 6 inches , dont forget to spray weed killer to kill seeds cause they WILL come back...

Answer 6

Dont rototille.Aerate then seed it.