This plant comes from northern Chile and historically has been very important as a source of edible fruits for the local Indian populations. In areas like San Pedro de Atacama it was a staple food, and it is very prolific. Its Chilean name is chañar, and there is even a city named after it - Chañaral.
This tree is very undemanding about the soil and can tolerate all kinds of soils, even saline ones, provided that it has good drainage. Just plant the seeds and keep them moist at relatively low temperatures (+12º +18º C). It is not a fast grower, and you can epxect fruits around sixth year. It can tolerate some freezing, but it is not a cold climate plant.