Light green grass problem - Help!
Hi all. I am having an problem with light green grass (or something) in my previously awesome, mostly TTTF lawn. It comes in patches and spreads more and more each year. It also grows faster than the regular, darker green TTTF. Even when it gets pretty tall, it has no seed heads, so I'm thinking it's not Poa?
I'm worried that I have used too many varieties of TTTF fescue over the years, including some blends with KBG in them. Could it just be different varieties of turf grass?
Below are some pictures. Any thoughts on the issue and resolution? Is any more info needed? Thanks!