Dead Thick Sod Spots, how to reseed?
My lawn is covered in dinner plate size dead spots. It was sodded with KGB (Russian version of KBG) 2 years ago. When I am cleaning out the dead grass/thatch to reseed, should I be removing everything down to the topsoil layer below the sod layer? The sod is about an inch thick...looks like mostly roots. Or just the loose dead grass/thatch on top?
I can remove everything and fill in the holes with topsoil and reseed, or I can leave it and cover it with a much thinner layer of topsoil and reseed and let the roots/thatch decompose below. Which option is better?