Raddi remained without employment from 1809 to 1814 but his position was restored after the defeat of Napoleon and was supported by Ferdinand III, Grand Duke of Tuscany.
Raddi studied the flora and fauna of the basins of Orinoco and Amazon Rivers, and formed a collection of plants and animals.
de Candolle, Franz Wilhelm Sieber, Joseph Antoir, and Carl Bernhard Trinius.
[1] In 1824 Ferdinand III died and his son Leopold II of Tuscany became the Grand Duke and continued the tradition of supporting of scientific research.
He died on the island of Rhodes on 6 September 1829 where he was buried in the church of Santa Maria della Vittoria.