I love the common name of this cactus species. The Red Headed Irishman definitely earns its name with the bristly red spines. These spines may fade to a lighter color as the cactus ages--sort of like my head of hair has done. I wrote about this cactus back in July if anyone is interested in the species. It was one my successful entries in the local Cactus and Succulent Society show last year.