This particular cultivar of Agapanthus praecox ssp orientalis is called Tall White and is the largest of the white types. Agapanthus praecox subsp. orientalis is a genus of herbaceous perennial bulbs that mostly bloom in summer. Agapanthus is collectively commonly known as Lily of the Nile, but it is not a lily. The flowering stems bear a single large, dense, and almost spherical cluster of numerous (i.e. up to 100) flowers at their tips(i.e. a terminal umbel). These flowers are initially enclosed in two thin leafy bracts, which are shed as the flowers begin to open.