Glyphosate Spraying in California Forests Raises Concerns Over Ecological Damage and Herbicide Addiction

The forest floor was barren—no ferns, brush, flowers, or wildlife remained. Only rows of hand-planted baby trees stood in stark contrast to the lifeless landscape.

This was the scene investigative reporter Nate Halverson encountered while foraging for mushrooms in the California wilderness near Lassen Peak. His discovery led to a yearlong investigation revealing a troubling trend: the US Forest Service and timber companies are applying glyphosate—the active ingredient in Roundup—in record quantities across California’s forests.

The goal? To regenerate timberland ravaged by years of megafires. However, the practice has sparked intense debate over its ecological impact and long-term sustainability.

Controversial Herbicide Use Under Scrutiny

On this week’s episode of Reveal, Halverson’s findings expose the growing reliance on glyphosate in California’s forests. The investigation highlights how federal agencies and private timber companies are prioritizing rapid reforestation over ecological health.

Craig Thomas, a fire restoration expert, criticized the approach, stating:

“The wedding of the chemical industry and the Forest Service has got to be seriously and deeply looked at. The Forest Service is ‘addicted to herbicide use and glyphosate, and we need to get them into rehab.’”

Ecological Consequences and Public Backlash

The widespread use of glyphosate raises concerns about soil degradation, loss of biodiversity, and unintended harm to native plant species. Critics argue that the herbicide’s long-term effects on ecosystems remain poorly understood, despite its short-term benefits for timber production.

Environmental advocates and scientists are calling for a reevaluation of these practices, emphasizing the need for sustainable forest management that supports natural regeneration without heavy chemical intervention.