Really depends on turf type and growing season.
. With fescue our growing season is feb-nov. if too hot lawns slow growth in the hot summer. So I find 6 apps work best.
With warm season the season runs march-October. We also have to deal with poa anu so winter apps are needed. I currently do 6 on warm but am considering moving to 7.
If there is a drought or lawns die off we will skip apps until conditions improve.
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