On Wednesday 10 September 2003, the St. Lawrence County drug task force joined Drug Enforcement Administration agents, state police, environmental conservation officers and National Guard troops to harvest and destroy between 75,000 and 80,000 marijuana plants found within about a mile of each other in the northern part of the county.[1][2] Crews cut plants some seven feet tall, hauled them away in dump trucks and burned them.[2][3]

Officials valued the haul at $30 to $80 million, at $400 to $1,000 a plant, with one investigator calling it among the largest single seizures he had seen.[1] But Sheriff Gary Jarvis said the plants had not been properly cultivated, and that at $80 million only if they had been.[3] He said he could not tell whether they had been sown where found or were growing wild.[3] A Cornell Cooperative Extension examination of a sample concluded it was not really marijuana but some sort of native hemp, and the sheriff agreed the harvest looked like wild plants with low levels of THC, the compound prized in marijuana.[3]

No arrests were made, and the sheriff said none were expected, with no indication the landowners had planted the crop.[2][3] Samples were sent to a Drug Enforcement Administration laboratory to test drug quality and fix a real street value.[3]