Devil's gardens are large stands of tree in the Amazonian rain forest that consist almost entirely of a single species, Duroia hirsuta. This paper discusses how the ant Mynnelachista schumanni, which nests in D. hirsuta stems, creates devil's garden by poisoning all plants except its host plants with formic acid. By killing these other plants, M. schumanni provides its colonies with abundant nest sites a longlasting benefit as colonies can live for 800 years.
