Graciano is a Spanish red wine grape of ancient origin and has been grown all around the Mediterranean under various synonyms. It is not particularly productive, due to low fertility, small clusters, and small berries, but there has been increased interest in this variety because its fruit quality potential is high, even when grown in warm or hot climates. Its acidity, tannins, and aroma are particularly notable.
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Petit verdot is an old French variety, first documented in 1736. Petit Verdot ENTAV-INRA 400 was moderately productive (12 tons/acre in the central San Joaquin Valley), and late ripening. However, other clones of Petit Verdot, including FPS 1 and 2, have been found to have very low yield potential (<5 tons acre) in the San Joaquin Valley. Regardless of yield, Petit Verdot wines can be richly colored, even from grapes grown in warm or hot climates. Due to its good productivity, late ripening, and high fruit quality, it may be of particular interest to growers looking for heat tolerant red wine varieties.