En Vaso

What is En Vaso?

En Vaso (Spanish for "in a glass" or "goblet-shaped"), also known as Gobelet (French) or Marco Real, is a traditional vine training method where vines grow as free-standing, low bushes -- without a trellis wire system or support structure. This ancient cultivation form is particularly widespread in the hot, dry regions of the Mediterranean and defines the landscape of many classic wine regions in Spain, southern France, and Greece.

The Method in Detail

In En Vaso training, the vine is shaped into a short, self-supporting trunk (30-60 cm tall) with several arms arranged in a circular or goblet-like pattern. The shoots grow freely upward and outward without being attached to wires. The result resembles a small bush or cup-shaped structure -- hence the names "En Vaso" (goblet) and "Gobelet" (cup).

Characteristics of En Vaso Training:

• Free-standing: No wires, posts, or trellises needed
• Low growth height: Typically 30-60 cm trunk height
• Bush form: 3-6 main arms forming a goblet or cup-shaped structure
• Very low planting density: Often only 1,000-2,500 vines per hectare (vs. 4,000-10,000 in modern trellis systems)
• Manual labor: All tasks must be done by hand -- machine use is impossible

Advantages in Hot, Dry Climates

The En Vaso method has proven itself over centuries in Mediterranean wine regions because it is perfectly adapted to extreme climatic conditions:

1. Optimal Water Usage

The extremely low planting density (often only 1,000-1,500 vines/ha in La Mancha) gives each vine a large root zone. In dry regions without irrigation, the vines can better utilize limited water resources without competing with each other.

2. Protection from Sunburn

The dense, bushy canopy protects the grapes from direct, intense sun exposure. The grapes hang sheltered inside the goblet, while the leaves on the outside act as a natural sunshade.

3. Ground Proximity and Cooling

Despite the low growth height, the grapes benefit from ground proximity: at night, when the soil cools down, cool air sinks and moderates extreme temperatures. In regions with large day-night temperature swings (like the Spanish Meseta), this is valuable for acidity preservation.

4. Wind Resistance

The low, compact form makes the vines resistant to strong winds, which are common on many plateaus (like La Mancha or the Rhone).

5. No Infrastructure Needed

In historical, remote, or extremely dry regions, wood for posts and wires was scarce and expensive. En Vaso requires practically no materials after planting.

Disadvantages and Challenges

Despite its perfect adaptation to hot, dry conditions, En Vaso training also has clear disadvantages that explain why modern vineyards are often converted to trellis systems:

1. Labor-Intensive

All tasks -- hand harvesting, pruning, canopy management -- must be done by hand in a bent-over position. This is physically demanding and time-consuming.

2. No Mechanization Possible

Modern harvesting machines, leaf-trimming equipment, or mechanical picking devices cannot be used. This makes En Vaso economically less attractive.

3. Low Yields per Hectare

The extremely low planting density means far fewer grapes are harvested per hectare compared to denser trellis systems. This is uneconomical for mass production.

4. More Difficult Quality Control

The dense canopy makes it harder to monitor grape health and ripeness. Rot or disease can go undetected.

Where is En Vaso Found Today?

En Vaso training is typical of traditional wine regions with hot, dry climates:

Spain

• La Mancha: The world's largest En Vaso region, primarily for Airen
• Rioja: Old Tempranillo vineyards in traditional Gobelet form
• Priorat: Old Grenache vines on steep slate slopes
• Toro: Traditional Tempranillo (Tinta de Toro) parcels

France

• Southern Rhone: Old Grenache and Mourvedre vineyards
• Languedoc-Roussillon: Traditional Mediterranean varieties
• Beaujolais: Some old Gamay parcels

Other Regions

• Greece: Santorini (in an extremely low "Kouloura" variant as protection against wind)
• Chile: Old Pais and Carignan vineyards in the Maule Valley
• Southern Italy: Scattered old parcels in Puglia and Sicily

Modern Renaissance

In recent decades, there has been a trend to uproot old En Vaso vineyards and replace them with modern, mechanizable trellis systems. However, some quality-focused winemakers increasingly recognize the value of these old systems:

• Old vines: Many En Vaso vineyards are 50-100+ years old and deliver concentrated, complex grapes
• Sustainability: No irrigation needed, minimal inputs, autochthonous varieties
• Terroir expression: The natural, non-interventionist cultivation method allows the terroir to shine through authentically
• Cultural heritage: En Vaso vineyards represent centuries-old viticultural tradition

Today, old En Vaso parcels are increasingly valued and form the basis for premium wines that highlight this traditional training method on their labels.

En Vaso vs. Trellis

| Criterion | En Vaso | Modern Trellis | |---------------|-------------|---------------------| | Planting density | 1,000-2,500/ha | 4,000-10,000/ha | | Mechanization | Not possible | Fully mechanizable | | Yield/ha | Low | Medium to high | | Labor effort | Very high (manual) | Low (mechanical) | | Water needs | Minimal | Often irrigation needed | | Grape quality | Can be very high (old vines) | Variable, depending on yield | | Drought adaptation | Excellent | Limited | | Infrastructure costs | Minimal | Medium to high |

Conclusion

En Vaso is more than just a training method -- it is a testament to centuries of adaptation to Mediterranean extremes. Even though this method is uneconomical for modern mass production, many quality-conscious winemakers preserve their old En Vaso vineyards as living cultural heritage and a source of extraordinary, terroir-driven wines. In times of climate change, this water-saving, sustainable cultivation method could even experience a renaissance.