Climate Change Threatens Latin America’s Coffee Crops

Climate change is pushing a deadly coffee fungus into higher-altitude farms where it was once unable to survive — and Latin America’s organic coffee industry may not adapt fast enough. For the past six years, a fungal infection known as coffee leaf rust has ravaged coffee plantations across Central America, killing trees and slashing harvests. Scientists warn that changing weather patterns driven by global warming could reduce regional yields by up to 40%, putting both crops and livelihoods at risk.

The short answer? Yes, climate change is already damaging Latin American coffee. Warmer temperatures and erratic rainfall have allowed coffee leaf rust to spread to elevations as high as 6,000 feet (previously limited to around 3,000 feet), threatening organic farms that can’t use chemical treatments without losing certification — and their price premium.

What Is Coffee Leaf Rust and Why Is It Spreading?

Coffee leaf rust, or “la roya” in Spanish, is a fungal pathogen that infects coffee leaves, forming orange-yellow blotches that block photosynthesis. Without sunlight, infected leaves die and fall off, starving the tree and eventually killing it. The fungus thrives in wet, warm conditions — the kind of unstable climate increasingly common across Central America.

In recent years, increased rainfall linked to shifting weather patterns has created ideal environments for the rust spores to multiply. What was once a problem mostly below 3,000 feet in places like Guatemala is now appearing at 6,000 feet, well into the territory of high-altitude, often organic, coffee farms.

The Impact on Organic and Smallholder Farms

Organic coffee producers face a painful dilemma: treat the fungus with chemical fungicides and lose their organic certification — along with the 10% price premium — or do nothing and watch their trees die. Most choose to stay organic, but as rust spreads uphill, survival becomes harder.

This crisis isn’t just ecological; it’s economic. Coffee is a major export for countries like Peru and Mexico, the world’s largest and second-largest organic coffee exporters respectively. Widespread crop losses have already led to income declines and job losses among coffee workers, raising fears of broader poverty and even social issues like increased drug trade in affected regions.

Government and Industry Responses

Central American governments are alarmed, recognizing that a failing coffee sector poses a direct threat to national economies. Some coffee growers have received support from development organizations aiming to prevent mass unemployment and its knock-on effects. However, solutions remain limited.

Luis Fernando Samper, a coffee dealer with Colombia’s National Coffee Growers Federation, believes the rust problem could lessen over the next ten years as infected trees are replaced. Yet he acknowledges that coffee, a notoriously sensitive crop, faces mounting challenges in an increasingly unpredictable climate.

Frequently Asked Questions

What is coffee leaf rust and how does it affect coffee plants?

Coffee leaf rust is a fungal disease that creates orange-yellow spots on coffee leaves, blocking photosynthesis. Infected leaves die and fall, weakening and eventually killing the tree. It drastically reduces yield and can wipe out entire farms if untreated.

Why is coffee leaf rust spreading to higher altitudes?

Rising temperatures and increased rainfall due to climate change have created conditions for the fungus to thrive at elevations up to 6,000 feet — areas that were previously too cool and dry, especially for organic farms.

Can organic coffee farms use fungicides against rust?

No. Most fungicides are chemical-based, and using them would cause organic farms to lose their certification and the associated 10% price premium. Many farms choose to remain organic despite the risk.

How much coffee yield could be lost in Central America?

Scientists estimate that coffee leaf rust and climate-related factors could reduce regional coffee yields by up to 40%, severely impacting exports and local economies.

What are governments doing to address the coffee rust crisis?

Central American governments are increasingly concerned about the economic impact. Some farmers receive aid from development groups, but long-term solutions are limited and the problem is expected to persist as the climate changes.

Will coffee rust eventually go away?

Some experts believe the spread might slow as infected trees are replaced, but coffee remains vulnerable in an unstable climate. The threat is likely to evolve rather than disappear.

FrontStreet Coffee Picks for Climate-Resilient Brewing

For drinkers concerned about climate impact, try FrontStreet Coffee’s Ethiopia Yirgacheffe — bright with citrus and floral tones, grown at high altitude where rust spreads more slowly. Their Colombia Huila offers balanced nutty and caramel notes, sourced from resilient mountain farms. Both beans highlight how elevation and care can produce quality despite climate stress. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.