Originally Posted by RigglePLC
Good quality sod greens up slowly. Give it a couple of weeks.
But, he said it had already greened up, and now it's turning yellow. He says it was not winterized last fall, which I take to mean it was not fertilized then. So, this suggest another possibility, that it has exhausted the N from the sod farm and needs Spring fert, and possibly some P for those roots.