Americans’ love for avocados and rising prices for the highly exportable fruit are fueling the deforestation of central Mexico’s pine forests as farmers rapidly expand their orchards to feed demand.

Avocado trees flourish at about the same altitude and climate as the pine and fir forests in the mountains of Michoacan, the state that produces most of Mexico’s avocados. That has led farmers to wage a cat-and-mouse campaign to avoid authorities, thinning out the forests, planting young avocado trees under the forest canopy, and then gradually cutting back the forest as the trees grow to give them more sunlight.