Cylindropuntia is a genus of cacti, native to northern Mexico and the Southwestern United States. They are known for their barbed spines that have a nasty habit of attaching themselves to skin, fur, and clothing! They have cylindrical stem segments, joined end-to-end and grow in a branching, tree-like manner. Cylindropuntia spinosior grows to 1.2m in height and has spine-covered stems. Flowers may be rose, red purple, yellow, or white and appear from spring to early summer. These are followed by fruits that are yellow with occasional red or purple tinges.