Application of melatonin mediated modulation of drought tolerance by regulating photosynthetic efficiency, chloroplast ultrastructure, and endogenous hormones in maize Chemical and Biological Technologies in Agriculture Springer Nature Link 9 perennial flowers to plant in April for blooms year after year Tom's Guide A Lovely Native Chickweed The Natural Web Curly dock in Maryland rain garden The role of cis elements in the evolution of crassulacean acid metabolism photosynthesis Horticulture Research My Yucca plant flowered so I made use of these delicious edible flowers. The Yucca plant is just outside my tropical outdoor kitchen.