The Frignoli Botanical Gardens in Fivizzano are near the Passo del Cerreto at 850 meters above sea level. The gardens were created in 1990 during the transformation of a State Forest Service greenhouse which was built in 1932. This is why the park boasts exotic conifer trees like the Atlantic cedar, Black pine, Douglas firs and White oaks; all native species of the Tuscan Apennines that have been artificially planted here. Some of these trees have grown to incredible proportions even though they are not even a century old.
The spontaneous vegetation still found in the area is typical of the traditional wooded areas of the mountainous region - maples, hazel, alders and more, including chestnut trees which had disappeared during the ice age before being reintroduced by humans for food purposes and becoming the most popular kind of mountain environment tree. The wooded areas boast more than one hundred varieties of tree and shrub species. There are several small reconstructed areas that are home to particularly specialized flora. A number of fruit species are also present including local apple varieties, strawberries, raspberries, blackcurrants, gooseberries and more.