Originally Posted by Smallaxe
Yes I am talking only about cool-season grasses...
Interesting note about thatch being an insulator for winter... We like to leave dead grass in the turf to insulate from the sun...
Or....you "dethatch" in early spring, then fertilize (if overseeding is not needed) & water like crazy to allow the turf to grow thick and you don't cut lower than 3" all summer and keep a steady water schedule, the turf itself will be an "insulate" from the heat.
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