They were burned Thursday at a Garfield County shale pit northwest of Enid, the Oklahoma Bureau of Narcotics and Dangerous Drugs said.
Agents from the bureau spend the summer going throughout Oklahoma eradicating marijuana.
The Oklahoma National Guard supports the effort, providing helicopters agents can fly in to search for marijuana.
Not all marijuana found is burned. Other plants in less-accessible areas are sprayed with herbicides to kill them.
I think "shale pit" is a law enforcement term for house party.