Uco Valley
Location: Mendoza Province, Argentina
Legal name: Indicación Geográfica Valle de Uco
Region: Mendoza
Regulatory body: Instituto Nacional de Vitivinicultura
Uco Valley is a protected wine-origin designation in Argentina, anchored in the existing wineknowledge region row for mendoza. It belongs in the appellations layer because it describes the legal name that may appear on labels, while any broader region row remains geographic and cultural context.
Characteristic grapes include Malbec, Cabernet Franc, Cabernet Sauvignon, Chardonnay, Semillon, Sauvignon Blanc, Pinot Noir. The wines often show dark fruit, violet, herbs, mineral tension, firm acidity, and polished tannin, with altitude shaping freshness. The grape list is a practical orientation rather than a claim that every bottle uses every variety.
Argentina's GI framework protects the origin name; Uco Valley is a high-altitude Mendoza subregion rather than a single required grape style. The rules protect origin and labeling, while producer choice, vintage, site, and cellar decisions still determine the final wine.
The IG adds a necessary Mendoza sub-origin beneath the broad Mendoza row. For EncyclopediaOfWine, the row keeps the legal designation separate from the larger region and from grape-variety reference content.
Permitted Grapes
Malbec, Cabernet Franc, Cabernet Sauvignon, Chardonnay, Semillon, Sauvignon Blanc, Pinot Noir.
Notable Rules
Argentina's GI framework protects the origin name; Uco Valley is a high-altitude Mendoza subregion rather than a single required grape style.
Recent Vintages
Recent Argentine vintages, especially in Mendoza and the Uco Valley, were sharply affected by the 2023 spring frosts that reduced yields, followed by dry, warm conditions and an early harvest. Public harvest reports describe low crops but fruit with freshness and concentration where vineyards recovered well. For high-altitude subregions, the key recent signal is frost exposure, water availability, and the ability to retain acidity under warm, dry conditions.
A general read of growing-season and harvest character — not a rating.
Also Known As
Indicación Geográfica Valle de Uco, Uco Valley GI, Uco Valley IG, Valle de Uco IG
Sources & References
- INV / Argentina geographical indication framework — Protected-origin regulatory framework; public reference.
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REFERENCE NOTE
This entry is written as an educational overview and may synthesize public regulatory, historical, and editorial sources. It is not an official regulatory record.
Editorial text, descriptions, and vintage commentary © 2026 Encyclopedia of Wine — The Wine Atlas Library. All rights reserved. May not be reproduced without permission.