Ferocactus rectispinus is endemic to central Baja California, with Cerro Colorado and Bahía Concepción as renowned locales for sizeable populations. Suitable for full sun cultivation, it is well adapted for very modest rainfall and intense summer heat. Flowering season can begin in late May and extends throughout the summer. The best clones will have long, straight spines from 6 to 10 inches in length with no curvature whatsoever. This species readily hybridizes and such plants can usually be identified by their arcing spines (figures 3 and 4).