Surrounded by gardens, the Frankfort Library differs from other libraries. Offering a wide variety of landscaping and plant materials, the library grounds provide unique aesthetic and educational opportunities for the patrons and community. A Staff Gardener maintains the grounds and is available to answer plant and landscaping questions. The Gardens are supported in part by the John Chandler Endowment.
In 2012, the Clinton County Contractual Library Board, in conjunction with the Clinton County Soil & Water District, began transforming an existing detention pond into a demonstration rain garden. An underground drain and native plants and grasses were added with the goal of offering a an opportunity to learn what a rain garden is and how it improves water quality as storm water travels through plant roots and soil filtering contaminants, bacteria, and nutrients typically found in runoff. Native plants were chosen for their ability to tolerate standing water for up to 48 hours. In its third year, the Rain Garden has exceeded expectations by also providing a haven for local wildlife and pollinators.