Wisconsin Life: Gardeners seek native flora

May is planting season in Wisconsin. Local garden centers are jammed with people buying spring and summer annuals and perennials. And for gardeners who want something a little more unusual – there are native plant sales. In Madison, The UW Arboretum’s Native Plant Sale is always a big event. Commentator Caryl Owen has been shopping it for eight years. This time, she brought her recorder as well as her checkbook…