The start of the warmer spring weather will herald the beginning of the cannabis cultivating season in the Bay of Plenty - leading to police fears of a spike in other criminal offending.
Detective Senior Sergeant John Wilson of the Bay of Plenty Police said at this time criminals involved in the cultivation of cannabis would be out and about in rural areas getting their crops started.
"Cultivating cannabis is about organised crime and the damage it does to our communities," he said.
In a statement, police said each year around this time there would be a spike in activity in rural areas, in particular on land such as the Department of Conservation estate and in plantation forests.
In the Bay of Plenty there are vast tracts of land in remote locations which lent themselves to covert and criminal activity, police said.