The storms that matter most around Harvard often arrive in March, heavy and wet, the kind that bows a shovel and turns to ice by evening. Stonebridge RH Landscaping INC is built for that end of the calendar: plowing the deep stuff, clearing walks and steps down to the surface, salting ahead of a melt that means to refreeze overnight. The morning after weather like that, the sun comes up over flat white country and every drive on the route is already open. That is the part worth doing carefully. Snow removal for Harvard and the roads out of it.