Every spring the herring climb the ladder at the Watertown Dam, and about a week later the grass along the river path comes in thick enough to need cutting. M&G Landscaping starts its season right around then — first cuts set high, beds cleaned out and re-mulched on the streets near Filippello Park. Through summer it is the weekly loop: mow, trim, edge, tidy up, move on to the next one. Fall means leaves, plenty of them, carried off before they mat down and take the color out of the turf. Lawn care for Watertown yards and the ones just over the line in the towns next door.