Folsom sits on the edge of blueberry country, where the fields run flat toward Hammonton and a July morning starts out cool and ends up blazing. Williams Lawn and Landscape LLC works those mornings — mowing before the heat sets in, trimming along fence lines and pine edges, edging the drives, and clearing away what the mower leaves behind. From Penny Pot out along the sand roads the properties are generous and open, and an even lawn reads clean across a long front yard. The growing season in this corner of Atlantic County is a long one, and keeping pace with it week after week is most of the craft. The reward is ordinary and complete: green grass, straight lines, and a yard that looks like somebody meant it.