While employed as director of the
ecclesiastic library
Sainte-Geneviève in
Paris, Ventenat took a trip to England. Here he investigated the country's
botanical gardens, inspiring him to pursue a vocation in sciences. Following his time at library he became an active botanist, studying under and collaborating with botanist
Charles Louis L'Héritier de Brutelle (1746–1800).[2] In 1795 he was elected a member of the Institut national des sciences et des arts, later known as the Académie des sciences.
In 1794 he wrote a treatise on the principles of botany titled Principes de botanique, expliqués au Lycée républicain par Ventenat. After publication he became so disappointed with its mediocrity that he reportedly made efforts to procure all copies of the book and have them destroyed. In 1798 he published a French translation of
Antoine-Laurent de Jussieu's Genera plantarum as Tableau du règne végétal selon la méthode de Jussieu.[3] In his translation of the work, Ventenat added information involving the properties and uses of plants.
In 1799 he published Description des plantes nouvelles et peu connues, cultivées dans le jardin de J.-M. Cels, a work that described flora in the
botanical garden of
Jacques Philippe Martin Cels (1740–1806), and in 1803 he published Le Jardin de la Malmaison,[1] being written at the request of
Joséphine de Beauharnais (1763–1814), who wished to immortalize the rare species of plants found in the gardens and
greenhouses of
Château de Malmaison. The illustrations in the two aforementioned works were performed by famed
botanical artistPierre-Joseph Redouté (1759–1840). Ventenat is also credited with continuing the work on
Jean Baptiste François Pierre Bulliard's Histoire des champignons de la France, a landmark work on
mushrooms native to France.