Timaru police have seized over 800 plants and 2kg of harvested cannabis head following a search of a property on King Street, Temuka on Wednesday.
A sophisticated hydroponic cannabis growing operation was found in the main building and outbuildings.
"The plants ranged in size from seedlings to fully mature plants and were well maintained and cared for," says Detective Senior Sergeant Richard Quested.
"We also found about 2kg of harvested cannabis head, some of which was in plastic snap lock bags and some was drying.
"This was a very good operation and I would expect this seizure to put a significant dent in the local cannabis market."
Police have returned to the property on Thursday to dismantle and seize the equipment used to grow the cannabis.
As part of the same operation a shipping container was seized from another property outside Temuka that contained another 40 cannabis plants.
A local Temuka man has been arrested and charged with cultivating cannabis and possession of cannabis for supply.
"Police take drug crime seriously and will take positive action against those people involved to hold them accountable," says Det Snr Sgt Quested.