The Salisbury Plain River threads along behind the old brick shoe factories, and every spring the green comes back to Brockton fast and all at once. Alex Landscaping Inc. meets it with mowers, trimmers and a rake: weekly cutting, sharp edging, bed work and mulch, and the full cleanup that gets a yard out from under winter. The soil here has been worked a long time, and it answers a steady schedule better than any single big day. By June the lawns hold their stripes and the borders stay where they were put. That is the whole aim of the job.