Two men will appear in court charged with a range of drug and firearms offences after police carried out two search warrants.
The Featherston men, aged 30 and 44, will appear in Masterton District Court on Thursday.
The 30-year-old has been charged with commercially cultivating cannabis and possession of a firearm, while the 44-year-old has been charged with methamphetamine possession, cannabis possession and possession of a restricted weapon.
Wairarapa police, with support from Wellington district staff, executed search warrants at two Featherston addresses.
During the searches a sophisticated cannabis-growing operation was discovered, containing about 120 cannabis plants ranging from seedlings to mature plants.
Small amounts of methamphetamine were found at both addresses.