August afternoons in Pomfret can turn fast: the lake goes slate, thunder stacks up over the water, and there is a half hour to finish a lawn before the sky opens. Gold Star Landscaping LLC has finished plenty of them — mowing, string trimming, edging, and the cleanups that bookend the growing year — and the smell of cut grass just before rain is one of the better things this town gives away for free. Work here follows the weather's short notice. What stays behind once the storm has passed is a yard cut even, edged sharp, and greener for the soaking. That is the whole idea.