Emerging and Heritage Grape Varieties of South America

South America's vineyards hold a catalogue of grape varieties that most wine drinkers have never encountered — and a few they've encountered without realizing it. This page maps the distinction between heritage varieties (grapes with deep pre-modern roots in the continent's colonial and Indigenous past) and emerging varieties (grapes being actively rediscovered, rehabilitated, or newly planted for commercial release). Understanding which is which matters because the stories behind a bottle shape how it tastes, how it's priced, and why certain producers are making bets that look unusual on paper but increasingly correct in the glass.

Definition and scope

A heritage grape variety in the South American context refers to a cultivar that arrived or developed in the continent before the modern wine industry's export era — roughly before 1980 — and persisted in small-scale, often rural production without significant commercial attention. Carmenère is the most famous example: a variety believed extinct in France after the 19th-century phylloxera epidemic, quietly growing in Chilean vineyards mislabeled as Merlot until ampelographer Jean-Michel Boursiquot identified it in 1994 (Instituto de Investigaciones Agropecuarias, Chile). Torrontés, Argentina's aromatic white, occupies a similar position — its precise parentage traced through DNA analysis to a cross between Muscat of Alexandria and the Criolla Chica mission grape, making it genuinely South American in origin rather than a European transplant.

An emerging variety is one now attracting deliberate investment, replanting, or appellation attention after a period of neglect or obscurity. The category includes grapes like País (Chile), Cereza (Argentina), and Pedro Giménez — all of which powered the continent's bulk wine industry for generations before being sidelined during the quality revolution of the 1990s. Renewed interest from natural wine producers and heritage viticulture advocates has repositioned these varieties from industrial commodities to artisan subjects. The full range of South America's varietal complexity is catalogued across the South American Wine Authority's main reference.

How it works

Grape identification in South America has been transformed by DNA profiling, primarily through work conducted at institutions including UC Davis and Chile's Pontificia Universidad Católica. Before molecular tools, vineyard blocks were catalogued by visual ampelography — leaf shape, berry color, shoot characteristics — a method accurate enough for common varieties but deeply unreliable in old mixed plantings where 8 to 12 distinct cultivars might grow interleaved in a single row. Argentina's Mendoza region alone contained what viticulture researchers estimated as more than 30 unclassified or misclassified varieties as of the early 2000s.

The mechanism of emergence follows a recognizable pattern:

  1. Field discovery — A winemaker or researcher notices anomalous vines in an old-vine block, typically in vineyards planted before 1950.
  2. Molecular identification — Tissue samples are submitted for microsatellite DNA analysis, often cross-referenced against international variety databases like the Vitis International Variety Catalogue (VIVC).
  3. Trial vinification — Small experimental batches are produced to assess flavor profile, fermentation behavior, and aging potential.
  4. Commercial positioning — If market interest exists, the producer applies for variety registration with the national agricultural authority (SENASA in Argentina, SAG in Chile) and begins scaling plantings or sourcing agreements with established growers.

The timeline from field discovery to labeled commercial release typically spans 5 to 10 years, limited by vine propagation rates and regulatory approval cycles.

Common scenarios

Old-vine rescue is the scenario most frequently discussed in wine media. When a producer acquires or contracts fruit from vineyards planted in the 1940s through 1960s, those blocks often contain heritage varieties that were economically unviable during the commodity era but carry concentrated flavor and genuine historical interest. Bodega Clos de Los Siete in Mendoza and producers like Matías Riccitelli have worked with field blends from such vineyards, though the broader movement is documented through organizations like Wines of Argentina.

Contrast: heritage vs. emerging commercial trajectory. Tannat in Uruguay provides a useful comparison point. Tannat arrived with Basque immigrants in the late 19th century and was always commercially cultivated — it is a heritage variety that never lost its primary status. País in Chile, by contrast, was actively devalued: Chilean winemakers ripped out País vines through the 1980s and 1990s in favor of Cabernet Sauvignon. País is now emerging from that erasure through deliberate rehabilitation, not continuous cultivation.

Altitude and micro-climate discovery represents a third scenario. Bolivia's Cinti Valley and high-altitude Tarija region, explored in South America's altitude viticulture context, harbor Muscat-derived heritage varieties grown at elevations above 2,000 meters by smallholder families using pre-industrial methods. Identification and commercial development of these varieties is ongoing.

Decision boundaries

Not every old vine or obscure cultivar qualifies as commercially viable, and the category boundaries matter for producers, importers, and consumers alike.

A variety is typically treated as heritage when:
- Documentary or DNA evidence places its regional cultivation before 1950.
- It was cultivated for local consumption or sacramental/domestic use rather than export.
- It has an established folk name distinct from its European variety name (e.g., Criolla, Moscatel Rosado, Negra Corriente).

A variety is treated as emerging when:
- Active propagation or planting investment is occurring in the current decade.
- At least 1 to 3 producers have released labeled varietal wines or labeled field-blend wines identifying it prominently.
- Trade press coverage reflects commercial availability rather than purely academic interest.

The overlap zone — varieties that are both heritage and actively emerging — includes País, Listán Prieto, and several Muscat clones. These are best understood through the lens of South American wine history, which tracks the colonial-era plantation records that document their original distribution across Argentina, Chile, Peru, and Bolivia.

References

Read Next

Carménère: Chile's Signature Grape Explained The grape looks similar, ripens later, and behaved just oddly enough that nobody asked too many questions until a French... Torrontés: Argentina's Aromatic White Wine Variety This page covers what Torrontés actually is, how the grape behaves from vine to bottle, where it grows best, and how to think... Tannat in Uruguay: Why This Grape Defines a Nation Over 150 years, the grape remade itself around Uruguay's Atlantic-influenced climate, producing wines that are structurally...