Solanum commersonii is one of the most southern of the wild potato species, occurring primarily in Argentina, Paraguay, Uruguay, and Brazil. Although the tubers are generally small and sometimes bitter, it is possible to make edible selections of this species and it was briefly cultivated in Europe early in the 20th century. There is considerable interest in breeding this plant with domesticated potatoes to introduce its various resistances. It is a diploid with 1EBN, so it is difficult to cross with domesticated potatoes, but relatively easy to cross with many of the North American species.
For more information, see our Solanum commersonii Growing Guide.