Tropaeolum majus L. "Tropaeolum majus is a flowering plant originating in the Andes from Bolivia north to Colombia. However it does not grow in the wild, only being reported from cultivated and naturalised populations. It is thought to be a hybrid between Tropaeolum ferreyrae and Tropaeolum minor, both of which are native to the Andes region in western South America. The species has become naturalized in many countries of the world. In New Zealand it and its cultivars are widely grown gardens but it is also a weed of watercourses, urban bushland, roadsides, railways, gardens, disturbed sites and waste areas. The seeds and stem segments are spread by water and by being dumped in garden waste." from: Link