Late in the day the hill on Waterbury's south side keeps the last of the light while the valley beneath it has already gone blue. Sanford and Company Landscaping Services works right through that hour — mowing, trimming, edging, and raking out the seasonal leftovers so a lawn can start its year on a clean sheet. Grass grows differently in a hillside city: sun on one flank, shade on the other, and a route that has to answer for both. Getting it even is the craft, and a yard that reads unbroken from the street is the result. Lawn care across Waterbury and the towns that ring it.