More than $40,000 cash was also located in the Taneatua raid, along with methamphetamine, LSD tablets, a firearm and ammunition.
Police said the hot and dry weather "may have provided good conditions for cannabis growers this year but it hasn't prevented police ... from raining on their parade".
Detective Senior Sergeant Lindsay Pilbrow said the operation saved about $52 million in social harm, the estimated financial cost of the cannabis trade on health, education, employment and social welfare.
"There is no debate to be had: drugs are a major social issue, especially in regard to our youth," Mr Pilbrow said.
"Smashing tinnie houses and removing other opportunities to cause social harm is going to have an effect.
"Several of the warrants we carried out during this operation were linked to organised criminal groups involved in large-scale production, distribution and sale of illicit drugs and the slightest dent in operations can have a major impact on their trade."
He urged anyone with information about illicit drugs to contact Crime Stoppers, anonymously, on 0800 555 111.
Area breakdown of search warrants:
Rotorua
- 50 search warrants executed
- 28 arrests
- 10 warnings
Western Bay of Plenty
- 45 search warrants executed
- 44 arrests
- 7 warnings
Eastern Bay of Plenty
- 33 search warrants executed
- 17 arrests
- 5 warnings
Taupo
- 41 search warrants executed
- 20 arrests
- 5 warnings
