People may be taking advantage of good weather, but not in a way police approve of.
The cannabis growing season will be "in full swing", enhanced by a warm winter, said senior constable Dave Kirk.
Mr Kirk is the central district's spokesperson for the annual operation against cannabis cultivation.
He said plants grown outdoors will generally be around waist high by now - and noticeable.
"Police need residents and visitors to rural areas of the district to be extra vigilant.