In 1818, Poiteau went to French Guiana where he supervised the cultures of the plantations of the royal houses. Back in France in 1822, he was appointed head gardener of the castle of Fontainebleau.
In 1818, Poiteau traveled to French Guiana where he was responsible for managing the plantations belonging to the royal families. Upon his return to France in 1822, he was appointed as the head gardener at the castle of Fontainebleau.