Stenocereus queretaroensis. USDA: 9b-11. (SYN: Ritterocereus queretaroensis, Pachycereus queretaroensis, Lemaireocereus queretaroensis, Rathbunia queretaroensis). Light shade to full sun. Hardy to 28°F. Tree-like growth, with stems to 18'. Pale pink flowers. Origin: Mexico.