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)
This undated photo provided by Mt. Cuba Center shows formal native plantings, including Asclepias tuberosa, Echinacea purpurea, Liatris, Physocarpus opulifolius and Artemesia ludoviciana, flanking a walkway at Mt. Cuba Center botanical garden in Hockessin, Del. (Alessandra Stokely/Mt. Cuba Center via AP)
This undated photo provided by Mt. Cuba Center shows formal native plantings, including Asclepias tuberosa, Echinacea purpurea, Liatris, Physocarpus opulifolius and Artemesia ludoviciana, flanking a walkway at Mt. Cuba Center botanical garden in Hockessin, Del. (Alessandra Stokely/Mt. Cuba Center via AP)
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)