September is the month Norwalk gets its real heat — the inland air settles over the blocks around Cerritos College and the lawns want water and a careful hand. Conscientious Landscaping keeps a steady route through it: mowing at a height that lets the turf hold its color, edging the walks, trimming shrubs back off the porch light. Late in the day the shadows stretch long across the cut grass and the whole yard cools down at once. Weeds get taken out, clippings get taken away, and the beds are left clear. There is a plain kind of pride in a lawn that comes through a Norwalk September still holding its green.