I'm wanting to reseed or possibly sod my front courtyard. When should I do this? I'm not sure what time of year I should be preparing to...

I'm not sure what time of year I should be preparing to do this. I am in South Carolina, so it go from kind of thaw to holy crap hot within a month or so. I basically dont want to kill the grass because I wait too long. Thanks.
Answers:    Spring or fall. Fall is the best time because more root nouns happens during this time.
slow spring to early go down.