 In 1796 Victor Amadeus III of Sardinia donated areas west and north of the castello, bringing the garden's area to somewhat larger than its current extent.By 1810 the garden contained about 6000 cultivated plants, with an arboretum organized on its northern section (the boschetto), and the constructions of greenhouses, orangery, and herbarium.Between 1831 and 1839 further construction added more greenhouses, and in 1848 a substantial orangery.