Juanita Vargas, 51, of Winton was arrested at her home on Wednesday.
Sheriff's investigators found several hundred pounds of marijuana at her home on Santa Fe Road last week. It happened while investigators assisted animal control workers who were looking into a report of starved horses.
Vargas claimed the pot was for medicinal use. Agents conducted another search on Wednesday and seized 400 pounds of marijuana and 44 grams of 44 grams of hashish. Hashish is illegal to possess regardless of medicinal marijuana laws
Investigators say the way the pot was packaged indicates it was for intended for sale and not medicinal use.
Vargas was released on $120,000 bail.