Gaze at ths beautiful cactus paper craft for a moment and you will find yourself in a relaxed, tranquil mood. It's the perfect decoration for any room. Also looks great when displayed with a prickly pear or columnar cactus. The notocactus uebelmannianus is a spherical-shaped cactus of the notocacteae tribe. It is native to lowland areas of South America such as Brazil, and can grow to more than 100cm in diameter. It begins to flower when it reaches a size of about 6cm, with reddish purple flowers that bloom for around three days.