The Glera grape cluster, elongated and lightly packed with long thin stalks sustaining the lightly sun-kissed grapes, is itself as delicate and elegant as the wine it produces. It is harvested in the second part of September, together with small quantities of the Verdiso and Perera grape which are equally represented in the vineyard and important for their acidity and aroma respectively.

As the new production regulations come into force, the Prosecco grape will be called Glera while the name Prosecco will refer to the area covered by the new denomination which stretches from Friuli across most of the Veneto and encompasses nine Provinces: Trieste, Gorizia, Udine, Pordenone, Treviso, Belluno, Venice, Padua and Vicenza. In this area 20,000 hectares of land is given over to the production of Prosecco DOC.

Inside the wide territory of Prosecco DOC (Controlled Denomination of Origin) the historical and small area of Valdobbiadene DOCG(Controlled and Guaranteed Denomination of Origin) stands out for its excellent quality grapes and its wine is named VALDOBBIADENEPROSECCO SUPERIORE. The Valdobbiadene grape is grown in the northern part of the Marca Trevigiana in a zone extending from Colle Umberto to Valdobbiadene, the ancient zone of Valduplavensis, "...where the vine blossoms eternally..." (St.Venantius Fortunatus 535-603 AD). Valdobbiadene is indisputably the most interesting vine-growing area in terms of quality and indeed its vineyards have always produced the most prestigious and fragrant Prosecco Superiore. The presence of many old and sometimes very old vines contributes to raising the quality of the Valdobbiadene vineyards. Thanks to its considerable root system, an old Prosecco vine, which may be defined as "the memory of the region", successfully copes with the varied climate so typical of the Valdobbiadene hills, thereby ensuring constantly high quality year by year.