October is Somerville's showiest month; the maples along the side streets go copper and the light arrives sideways. Gabriela H. Landscaping and Construction spends it in leaves — clearing beds, putting down the last cuts of the year, carrying the season away by the truckload. Come May the same properties want the opposite: growth held in check, edges redrawn, borders tidy against the walk. There is a real satisfaction in a yard put right in autumn, bare and swept and ready to sleep. The work runs from one end of the year to the other, block by block.