The ecological case for letting agave flower has become a standard slide in agave spirits sustainability decks. Blue Weber agave is pollinated by nectar feeding bats, principally the lesser long-nosed bat, but commercial fields are propagated clonally from hijuelos and harvested before the plant sends up its quiote, because the sugar a distiller wants goes into the flower stalk. The result is a crop that no longer needs its pollinator and loses genetic diversity with every generation.

The Bat Friendly Tequila and Mezcal Project is the response. Dr Rodrigo Medellin of the Institute of Ecology at UNAM began the work in 2014 with David Suro-Pinera and the nonprofit Tequila Interchange Project. Participating producers commit to letting 5% of the agaves in a field flower, feeding bats and producing seed for replanting. TIP says the pilot phase produced millions of viable seeds and that more than 300,000 bottles carrying the mark have reached markets in Mexico, Australia, Europe and the United States.

It is not a certification, and it says so

This is the detail most coverage skips. TIP states plainly that the Bat Friendly project is not a certification programme, and that because it is not, its operating costs cannot come from the producers themselves. Funding has to be raised elsewhere. That is a deliberate ethical choice, and it is also the structural reason the programme has not scaled the way a fee funded scheme would. TIP has said it is trying to raise money to expand the scope and incorporate more producers as resources allow.

The consequence is visible in the public record. The brand list on batfriendly.org runs from 2016 to 2021 and thins fast. The 2016 cohort is the substantial one: Tequila Ocho, Tequila Tapatio, Tesoro de Don Felipe, Siembra Valles Ancestral and 7 Leguas on the tequila side, plus Siembra Metl Cupreata and Don Mateo de la Sierra Cupreata in mezcal. The years 2017 to 2019 list Don Mateo de la Sierra alone. 2020 adds TOCUZ Alto. 2021 lists Don Mateo and Mezcal Vago Pechuga. No tequila brand appears on that page after the 2016 group. Any reader can check it in a browser in under a minute.

The conservation record is stronger than the commercial one

The science side has results the label side does not. Medellin's research contributed to the delisting of the lesser long-nosed bat in Mexico in 2015, with the United States following roughly three years later, the first bat species removed from Endangered Species Act protection. That is a genuine outcome, and it was achieved largely through roost and habitat work rather than through bottle sales. Conflating the two overstates what the label has so far delivered.

The economics of the 5% commitment are simple and unforgiving. A plant allowed to flower is a plant not harvested, and its sugars are spent on the quiote rather than on the oven. During the agave price spike of the early 2020s that was an expensive gesture for anyone buying agave on the open market. Which is why the current point in the cycle matters more than any amount of marketing.

Cheap agave is the real argument for expansion

IWSR's July 2026 assessment expects an agave supply glut by 2030 as years of over planting reach harvest, and its research director for Central and South America, Jose Luis Hermoso, expects raw material costs to ease meaningfully within three to five years. When agave is cheap, the opportunity cost of surrendering 5% of a field collapses. That is a more powerful driver of adoption than any consumer campaign, and it is the reason the next three years are the programme's best window.

Working the other way, the tiers that pay for sustainability storytelling are under pressure. IWSR put super premium tequila volumes down 6% last year with a 5% compound annual decline forecast to 2030. Ultra premium grew 7%, and its share of US tequila volume has risen from 6% in 2019 to 17% last year. If pollinator commitments spread, the money is likeliest to come from the top of the range rather than from the middle, which is where most of the traditionally produced brands on the 2016 list actually sit.

What we are watching

Four things that can be verified rather than asserted. Whether batfriendly.org updates its brand page beyond 2021, which is the single cleanest test of whether the label is growing. Whether TIP announces funding that lets it add tequila producers, since it has said resources are the binding constraint. Whether any brand in the top tier of US tequila volume adopts a published 5% flowering commitment, as opposed to general pollinator language. And whether the CRT takes any position on pollinator claims on labels, given how it has treated other unofficial seals since 2024.