Welcome to our Farm! Kerstens’ Maple Hill Centennial Farm is owned and operated by Ron and Leanne Kersten. We have a sugar shack and maple woods that provide maple syrup in the early Spring. Our greenhouse opens the last week end in April, and runs through the month of June. The CSA gardens are put in starting the end of April, and we begin harvesting from them with produce for pickup the middle of June, with weekly offerings through October.