Do I kill all existing grass before rotavating
This coming autumn it is my intention to revamp my tired weed-ridden and wet lawn. The plan is to;
spot kill weeds > rotovate > dig drains > spot kill weeds again > rotavate again > new layer of topsoil> reseed.
It’s a 0.5 acre patch and I would like to keep the use of chemical weed killer to a minimum. My question is, will I achieve desired result if I start rotavating a lawn where all existing grass has note being killed?
Any advice would be much appreciated!