In Ecuador, "Pinus radiata" plantations were planted extensively around Cotopaxi National Park, and "Suillus luteus" boletes appear in abundance year-round. A 1985 field study estimated production to be 3000–6000 mushrooms per hectare—up to (dry weight) of mushrooms hectare per year. This continuous production contrasts with the bolete's seasonal appearance elsewhere. The fungus is not found in adjacent areas of native vegetation. The fruiting is so bountiful that the harvest of slippery jacks has become the main reason that pine plantations are established or maintained in parts of Ecuador. In southern Brazil, it has been recorded in plantations of slash pine ("P. elliottii") in the municipalities of Pelotas, Nova Petrópolis and Canela in Rio Grande do Sul, and Colombo in Paraná. It is particularly common in plantations in Patagonia. "Suillus luteus" is the commonest bolete encountered in the Falkland Islands, where it is found in windbreaks and gardens.