Jeannette police seized 57 marijuana plants from a house earlier this month and arrested the occupant.
Aaron Thomas Hopkins, 37, is being held in the Westmoreland County Prison on drug-related offenses.
Police reported in court papers that they searched the Bennett Avenue home on Friday and found Hopkins inside along with two marijuana grow rooms.
Inside the one room were 21 marijuana plans and three grow lights. Thirty-six plants were found in the second room along with three lights and a calendar which detailed maintenance and care of the plants, according to an affidavit.