Located behind the Dunwich United Church, the Buttermilk Bog is a centennial project of the Dutton Dunwich Horticultural Society. The area, saturated with buttermilk from the old Strathcona Creamery, has been turned into an enchanting arboretum with approximately 50 different species of trees, including magnolias, American chestnut, sycamore, pawpaw, sassafras, flowering dogwood, sawtooth oak, butternut, gingko and black cherry.