The Trebbiano grapes has been growing in Italy since the time of the Etruscans and seems to be native of the Romagna hills. Its characteristics suitable to adapt to the different climatic conditions have also enabled its spread over a large part of the Italian territory, where the Trebbiano has given rise to a number of different varieties, depending on the area of adoption. The Trebbiano Giallo is mainly grown in Lazio (though can be found sporadically in Umbria, Puglia and Veneto) and, in particular, in the Castelli Romani area. The first written records date back to 1825, when Acerbi describes it in these terms: "Mediocre trunk. Hard shoots, with nodes that are very close to each other; leaf somewhat fluffy below. Mderately dense grape stalk, spherical, semi-opaque, golden grapes; leathery grape seeds, very astringent. Clingstone and sugary pulp. " A vine present in three biotypes, which differ mainly due to the characteristics of the bunches: small-sized, with conical trunk; medium-sized, with one or two wings; and large, with well-developed wings.
