I've lived in this home for 6 summers now and this is the first time I've seen this: orange grass.
I googled it, and apparently it's "rust".
Trying to think of what might be different this year to cause it. Only thing I can come up with is that we let the grass grow a little taller this year before mowing. We live out in the country and have about 2 acres to mow.
Anybody have any experience with this?