This undated photo provided by Mt. Cuba Center shows the Hockessin, Del. botanical garden's formal South Garden, planted entirely with native plants and cultivars of native plants, including: Penstemon, Thalictrum, Tradescantia, Liatris, Monarda, Amsonia, Artemesia, Baptisia, Eryngium, Physocarpus, Redbeckia, Solidago and Eryngium species. (Melissa Starkey/Mt. Cuba Center via AP)