It shows off the form and texture of succulents, just as any container garden. One example of this is the Christmas Cactus. This ensures good airflow and less humidity in the terrarium environment. This plant can grow up to 1.5ft tall and doesn't require a lot water. "This group has undergone mitosis." As I pressed it with my fingertip, I expected that the plump cell would yield like a water balloon. But, it was firm.