Last May we sodded a lawn with centipede grass. Sent out soil for soil test and followed instructions. Sod took root great and looked green and fantastic all season until frost. Spring comes around and sod doesn't green up. We sodded this lawn and one more off of the same delivery. The other lawn is greening up nicely. We don't maintain the property that has the problem but maintain the other. The homeowner called and I looked at the sod and it looks dead. I have no idea what happened or how it was maintained. I have (2) questions: (1) any idea what the problem is (cold damage comes to mind) (2) do you gaurantee sod that you don't maintain after installation We give a 90 day gaurantee on sod that we install but don't maintain and one year on the ones we maintain. I am not going to replace this sod. I feel that with proper maintenance it would not have failed because the other lawn is fine. Your opinion please.