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Rangers Dismantle 13-Acre Illegal Marijuana Grow in Sequoia National Park

Officials say the operation fits a long-running pattern of cartel-style cultivation in the Sierra parks.

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Visitors walk near giant sequoia trees on August 22, 2022, in Sequoia National Park, California.
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Overview

  • Crews in mid-August removed 2,377 mature plants and about 2,000 pounds of trash and infrastructure from the remote site.
  • The grow was first detected and raided in 2024, but full rehabilitation waited until hazardous chemicals could be safely removed.
  • Investigators documented diverted creek flows, irrigation pits, terraced plots, nearly two miles of illegal trails, and signs of poaching.
  • A semi-automatic pistol and roughly a gallon of the banned insecticide Methamidophos were recovered, prompting contamination assessments.
  • No arrests have been announced, and authorities say the investigation continues as officials warn of pesticide-tainted runoff and heavy water use by illicit grows.