I spent months reporting on an invasive plant that bureaucracy can't seem to kill. Ask me anything.
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I'm Fletcher Reveley, a journalist writing for u/UndarkMagazine.
On March 16, I published a long investigation into Arundo donax, a towering, bamboo-like invasive reed that has colonized waterways across the U.S. and beyond. Scientists figured out how to kill it decades ago. So why is it still winning?
Here's what I found:
- Arundo donax can grow up to 4 inches a day, reach heights of over 25 feet, and reproduce through underground stems so aggressive that disturbing them can make the problem worse. It outcompetes nearly every native species and has been called "the greatest threat" to California's riverside ecosystems.
- The science of killing it is actually pretty straightforward: start at the top of the watershed, work downstream, apply herbicide in the fall. Teams cracked the code in the early 1990s. And yet, it keeps winning.
- Along the Rio Grande, DHS has determined that Arundo is a border security issue. Migrants sometimes hide in the dense thickets, making it difficult for Border Patrol to spot them. As a result, DHS funded a massive biological control program: over 1.2 million wasps dropped from low-flying Cessnas to attack the plant. Whether it worked is... contested.
- The real obstacles aren't biological, but human. Things like bureaucratic turf wars, siloed agencies, underfunding, two separate corruption scandals, an armed attack on a contractor's boat, and an international border where the plant grows freely on the Mexican side with no meaningful control effort.
- DOGE cuts gutted the federal scientists working on the California biocontrol program. The coordinator who was trying to unite the competing Texas programs lost funding in spring 2025. The programs retreated to their silos.
- One small watershed in California, the Ventura River, is offering a rare glimmer of hope with a first-of-its-kind whole-watershed permitting approach.
I'm here to answer your questions about invasive species, border politics, biological control, and what happens when the science is solved but the humans can't get out of their own way.
https://preview.redd.it/8qp7ljszj5vg1.jpg?width=4284&format=pjpg&auto=webp&s=8a44f269df1ce6146ea186b9f4b1187866d882ce
Read the story: https://undark.org/2026/03/16/arundo-donax-invasive-plant-bureaucracy/
Proof: https://x.com/FletcherReveley
submitted by /u/UndarkMagazine
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