[1] Last spring, the Maplewood branch library opened a seed library on its ground floor. [2] Patrons browse packets of tomato, bean, and zinnia seeds, then "check them out" using their regular library cards. [3] At the end of the growing season, gardeners return a portion of the seeds harvested from their healthiest plants. [4] Over several seasons, this cycle yields varieties that are increasingly suited to local soil and weather. [5] The packets are filed in the shallow drawers of a repurposed wooden card catalog beside the circulation desk.