Sometimes called "Living Stones".
Mammillaria is one of the larger genera in the Cactus family, and one of the most variable.
Rod Haenni has explored the hardiness of thousands of different cacti and other succulents in different settings and microclimates. All of the plants were subjected to below zero Fahrenheit every winter, including…
There were about 100 succulent Senecio species, some of which have been moved to the genera Caputia, Curio, and Kleinia. There are many non-succulent Senecio species.