The peepers start in the wet hollows behind the Hopatcong streets before anyone's mower has come out of the shed, and that is the borough's real signal that spring has arrived. Oasis Lawn Care And Landscaping LLC opens the year there with cleanups, then holds the mowing, trimming and edging line all the way to the last warm week. The other half of the calendar belongs to snow: driveways plowed, walkways cleared, ice handled where the ground stays in shadow. Between a big lake, a lot of trees and a lot of hill, this is a town that gives a yard plenty to contend with. Somebody has to stay ahead of it, week by week.