This plant grows in relatively warm northern regions of Chile. It has beautiful big white flowers, which, when open, can reach 6 - 7 cm. in diameter. This plant being annual does not have restrictions as to the coldness of the zone where it can grow, all it needs is about 5 - 6 months of relatively warm weather (a maximum of +20? C is more than sufficient). It is quite prolific in terms of seeds, so that you would not have any troubles obtaining seeds for the next season. The only disadvantage is that it has thorns on the leaves, flower buds, and fruits, which may discourage a closer contact.
The seeds of this plant germinate easily, so that you can sow them directly into the ground. It does not need complicated soil mixtures - provide good drainage and very little organic matter and you will be fine. Maintain the seeds wet at all times until they emerge, then reduce watering to a minimum. Expose to sun.