Join instructor Liz Riley for this online, six-session course on annuals, perennials and vines identification that opens Monday, July 10, 2017. Longwood Gardens is partnering with North Carolina State University to provide a unique fully online survey of plants. This course examines annuals, perennials, and vines and reviews use and key identifying characteristics of plants through photo stories, presentations, online fact pages, and beautiful images. Learn more at Longwood Gardens. Photo credit Longwood Gardens.