Stand on the hills south of Elmira and the Pennsylvania line is right there — this is Twin Tiers country, two rows of border counties sharing one set of weather. Twin Tier Landscaping & Tree Service works the New York side of it year-round, mowing, trimming and running seasonal cleanups through the green months, then plowing, shoveling and salting when the valley fills in white. Border-country winter is changeable: rain down at the river, snow four hundred feet up, both inside the same afternoon. You watch the sky and you go early. Summer or winter, a property that is kept up announces itself from the road.