Straight lines are the whole argument. Lucky Lines Lawn Care LLC cuts Bozeman yards in clean parallel passes and reverses them the following week, so the grass stands up and the stripes read all the way from the sidewalk. Valley afternoons build their own weather — thunderheads stacking over the Gallatin Range by two o'clock — so the mowing goes in ahead of it and the trimming, edging and blow-off finish before the first fat drops land. Fertilization, weed control, aeration and overseeding keep the turf dense enough to hold a line at all. Spring and fall cleanups take care of the two ends of a season that arrives late and leaves in a hurry.