On 2 September, 130 cannabis plants with an estimated street value of £130,000 were found on Firth Park Road in north-east Sheffield.
While on 26 August, 300 cannabis plants worth an estimated £300,000 were seized in Limpsfield Road.
Sgt Cook added: “If you think cannabis is being grown in a property near to where you live, it’s important that you tell us.
“As these recent results show, we’re constantly gathering and acting on intelligence as part of our daily proactive policing and the information you provide us with could be the launchpad for removing dangerous people from our streets.”