When your GRASS LEAVES FOLD, THEY NEED WATER!!!
1 set of directions for every lawn on every type of soil... and every type of week during every winter is CRAZY talk.
2nd --- your soil is ALKALINE, and your roots are TOO SHALLOW, you will need light waterings often. Unless you get the soil below your sod to around 6.2-6.5 pH. Then you will have deeper roots and be able to water less.
3rd---Your grass is NOT PICKING UP IRON because of the alkalinity. Not only will this cause yellowing, but causes your lawn to more susceptible to insects and disease... AND causes your lawn care company to green you up with extra NITROGEN, eventually leading to fungus. (also causing yellowing)
again---When your GRASS LEAVES FOLD, THEY NEED WATER!!!
You could easily check in person or set up remote testing of soil moisture, but LOCATION needs to be representative of the whole lawn AND the depth representative of your ROOT DEPTH.
YELLOW this time of year is often, not your primary lawn grass but something else growing that looked fine during the summer when it was green.
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