On 8 October 2004, Washington County Drug Task Force agents seized the largest cannabis grow site in southern Utah’s history near the Pine Valley district of the Dixie National Forest.[1] Three Mexican nationals were arrested at the site and a fourth was arrested the next day near St. George.[1] A hiker had found the cultivation site along a stream in a secluded area and reported it to officers.[2]

The site held more than 1,500 cannabis plants.[1][2] Agents subsequently seized 814 plants growing among scrub oak trees, 764 plants in the drying stage, and 50 pounds (about 22.7 kg) of processed marijuana.[1][2] The growers watered the site with a gravity-flow irrigation system running through plastic tubing from a nearby stream.[1][2] Investigators believed other accomplices had left the area for Southern California or Mexico.[1][2]

A 2005 Forest Service account said a citizen reported a large grow the previous year on the Pine Valley ranger district just north of St. George, and officers confiscated 1,700 plants and charged four people with cultivating them.[3]