2.5" Mammillaria matudae cristata
Cristate forms generally occur when injury occurs to the plant at a young age (this damage can be due to insects eating the growing tip, or from many other causes, including a genetic predisposition). In reaction to the "injury", the cells at the tip of the branch where growth occurs begin to multiply at a much faster rate and the normal growing tip "goes crazy", creating fantastic whorls and fans. Requires porous cactus soil. Best color and form in bright light. Water thoroughly when soil is dry to the touch. As the "fans" of cristates can trap water that can lead to rot, it is preferable to water from beneath, if possible. Water thoroughly when soil is dry to the touch, except on cloudy, humid or cold winter days. Protect from frost.