Since first opening their grounds in 1980, Adkins Arboretum?s 400-acre garden and preserve have sheltered plants native to the mid-Atlantic coastal plain. More than 600 species of them, in fact, encompassing everything from water hemlocks and flowering dogwoods to skunk cabbages. These trees, shrubs, and grasses?not to mention picturesque streams and meadows?line five miles of paths, along which visitors can walk, bike, or even ski. If five miles sounds daunting to youngsters, they can instead explore Paw Paw Playground, an assemblage of wigwams, balance beams, and other toys crafted from natural materials by a local Eagle Scout. Besides its extensive gardens, Adkins Arboretum also plays host to numerous year-round programs, including lectures, art exhibitions, and two plant sales each year.