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 visited French Guiana to manage the plantations of the royal houses. In 1822, after returning to France, he became the head gardener at the castle of Fontainebleau.