Established by the will of Maria Luisa of Bourbon, the botanical underwent a period of crisis, from World War I until the 50 's, when the City Council has begun the recovery and enhancement. Since 1974 the garden has taken to carry out all its institutional functions. There are several thousand species of plants in the Mediterranean region. All'orto botanico is attached the Cesare Bicchi, Botanical Museum is not currently open to the public because in the process of cataloguing. There are preserved the historical herbariums (Puccinelli, Balaji, and others).