In Roman mythology, Vertumnus ([ˈwɛr.tʊm.nʊs]; also Vortumnus or Vertimnus) is the god of seasons, change and plant growth, as well as gardens and fruit trees. He could change his form at will; using this power, according to Ovid's Metamorphoses (xiv), he tricked Pomona into talking to him by disguising himself as an old woman and gaining entry to her orchard, then using a narrative warning of the dangers of rejecting a suitor (the embedded tale of Iphis and Anaxarete) to seduce her. The tale of Vertumnus and Pomona has been called the only purely Latin tale in Ovid's Metamorphoses.
Vertumnus' festival was called the Vertumnalia and was held 13 August.
The name Vortumnus most likely derives from Etruscan Voltumna. Its formation in Latin was probably influenced by the Latin verb vertēre meaning "to change", hence the alternative form Vertumnus. Ancient etymologies were based on often superficial similarities of sound rather than the principles of modern scientific linguistics, but reflect ancient interpretations of a deity's function. In writing about the Festival of Vesta in his poem on the Roman calendar, Ovid recalls a time when the forum was still a reedy swamp and "that god, Vertumnus, whose name fits many forms, / Wasn’t yet so-called from damming back the river" (averso amne).
Vertumnus is a painting by Mannerist painter Giuseppe Arcimboldo produced in Milan c. 1590-1591. The painting is Arcimboldo's most famous work and is a portrait of the Holy Roman Emperor Rudolf II re-imagined as Vertumnus, the Roman god of metamorphoses in nature and life; the fruits and vegetables symbolize the abundance of the Golden Age that has returned under the Emperor's rule.
Looking from the distance, Arcimboldo's whimsical portraits might look like portraits, but they are assembled using vegetables, books, plants, kitchen ustensils, sils, fruits, sea creatures, animals and tree roots, each individual object chosen to give the impression of anatomical trait of a human face. The portrait of the emperor is created out of plants – flowers and fruits from all seasons: gourds, pears, apples, cherries, grapes, wheat, artichokes, peapods, corns, onions, artichoke, cabbage foils, cherries, chestnuts, figs, mulberries, grapes, plums, pomegranates, various pumpkins and olives. Rudolf's portrait is composed of fruit, vegetables and flowers were to symbolize the perfect balance and harmony with nature that his reign represented. These portraits were an expression of the Renaissance mind's fascination with riddles, puzzles, and the bizarre. Arcimboldo's traditional religious subjects were later forgotten, but his portraits of human heads composed of objects were greatly admired by his contemporaries. The painting Vertumnus is part of the collection at Skokloster Castle in Sweden.