Also known as Black Rose, the Zwartkop Aeonium is more commonly found in cultivation in comparison to the natural green species. There is also a white variety (Aeonium arboreum var. albovariegatum). Zwartkop reacts to sunlight, and the stronger the sunlight, the blacker it becomes. It really is quite extraordinary. It's fleshy, but then if you touch it to break the end of the leaf, it feels almost like plastic. It produces golden pyramids of flowers in late spring. This plant is a monocarpic species, meaning that it dies after flowering. Although their yellow flowers are attractive, each time they bloom, a rosette dies.