Biodiversity, Terroir & the Future of Mezcal

Agave is more than just a plant. It’s a living record of landscapes, cultures, and the people who have worked with it for generations. To talk about agave biodiversity is really to talk about how nature, history, and community come together in every bottle of mezcal.

Right now, that diversity sits at a crossroads. Global demand for agave spirits continues to grow, but the ecosystems and traditions that sustain them are under increasing pressure. Understanding agave—truly understanding it—means recognizing how much is at stake.

Agave Biodiversity: A Living Library of Species

Mexico is home to more than 200 species of agave, each shaped by its environment and by centuries of human care. This extraordinary range of plants is one of the reasons mezcal is among the most diverse spirit categories in the world.

Some species are widely known, while others remain deeply tied to specific regions or communities:

• Agave angustifolia (maguey: espadín, espadilla, tepemete) is adaptable and relatively reliable, which is why it forms the backbone of production in many mezcal-producing areas.

• Agave potatorum (maguey: tobalá, papalometl) grows slowly in shaded mountain terrain and is prized for its complexity and delicate aromatics.

• Agave karwinskii varieties (maguey: cuishe, madrecuixe, barril, tobasiche) grow tall and slender on steep hillsides, often producing spirits with striking mineral character.

• Agave marmorata (maguey: tepeztate, pitzometl) can take more than twenty-five years to mature—an extraordinary reminder of how patience and place shape mezcal.

Each of these species has adapted to specific conditions: rocky soils, high elevations, forest shade, or long dry seasons. Those adaptations influence flavor just as much as roasting, fermentation, or distillation techniques. In many ways, the personality of a mezcal begins long before the agave is harvested.

Terroir: When Place Becomes Flavor

People often use the word terroir when talking about wine, but it applies just as naturally to agave spirits. In mezcal, terroir isn’t simply a tasting note—it’s the relationship between the land and the people who know how to work with it.

A number of elements shape that relationship:

• Soil influences how agave stores sugars and minerals. Volcanic earth, limestone, or clay can all leave their mark.

• Climate affects how the plant grows over time—sunlight, rainfall, and temperature swings all matter.

• Wild microorganisms drive fermentation, meaning each batch reflects its surroundings.

• Water sources can subtly influence texture and aroma.

• Local traditions, from roasting styles to still design, shape the final spirit.

Together, these factors create something remarkably specific. A mezcal can reflect not just a region, but a hillside, a village, or even a particular season.

Growth, Pressure, and the Risk of Simplification

The growing popularity of agave spirits has created new opportunities for producers and new curiosity among drinkers. But growth also brings pressure. As demand increases, there is a temptation to simplify—to rely on fewer species, plant agaves in monocultures, and speed up production wherever possible.

Those changes can increase supply, but they also risk flattening the very diversity that makes mezcal special. When efficiency becomes the dominant priority, traditional cultivation practices and small-scale producers can easily be pushed aside.

The challenge now is finding a way to grow responsibly without sacrificing the ecological and cultural richness that defines mezcal.

The Fragility of Wild Agave

Many of the agaves people are most excited about are not widely cultivated. They grow in the wild, often in specific ecological niches, and they take years—or decades—to mature.

 That makes them vulnerable.

Species like tobalá reproduce primarily through seed and grow slowly. Tepeztate may require twenty-five years or more before it is ready to harvest. Jabalí can be difficult to ferment, which sometimes leads to higher extraction pressure. Wild karwinskii varieties can be especially sensitive to environmental change.

Once these plants are depleted, they cannot simply be replaced the following season. Protecting them requires long-term thinking: planting diverse seedlings, maintaining pollinator habitats, and ensuring communities have strong incentives to steward the land.

Communities at the Center of Conservation

In many mezcal-producing regions, biodiversity survives because local communities actively care for it. Their work often includes practices such as:

• allowing certain agaves to flower so they can produce seed

• maintaining nurseries to cultivate young plants

• mixing cultivated and wild agaves within traditional farming systems

• passing ecological knowledge down to younger generations

These practices aren’t just environmental strategies—they’re cultural ones. Biodiversity and tradition are deeply connected.

Why Biodiversity Matters

If agave diversity disappears, mezcal changes fundamentally.

Fewer species mean fewer flavor profiles and fewer regional identities. Monocultures increase vulnerability to pests and disease. And when wild agaves disappear, the knowledge and traditions connected to them often disappear as well.

Protecting biodiversity isn’t just about protecting plants. It’s about protecting culture.

What Consumers Can Do

Consumers have more influence than they might realize. A few thoughtful choices can help support the future of agave spirits:

• Look for producer-focused mezcal from brands that emphasize transparency.

• Choose bottles that clearly identify the agave species, village, and production methods.

• Be cautious of vague claims about “wild agave” without explanation.

• Ask questions about replanting efforts, sustainability practices, and fair pay for producers.

• Explore agave species beyond espadín to encourage broader biodiversity.

Each purchase signals what kind of mezcal industry we want to support.

A Future Worth Protecting

Agave biodiversity is one of Mexico’s great natural and cultural gifts—a remarkable world of plants, flavors, and traditions that exists nowhere else on earth.

Protecting it will require ecological care, cultural respect, and economic fairness. It means recognizing that mezcal is not simply a drink, but the result of relationships between people and land that have developed over centuries.

To protect mezcal is ultimately to protect the communities, landscapes, and traditions that make it possible.

As David Suro and Gary Nabhan write in Agave Spirits,

“How we eat and drink is how we treat our planet, our neighbors, and ourselves.”

Those choices will shape the future of agave.