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?