news Kitchener-Waterloo Cannabis thefts on the rise as harvest season reaches midpoint Social Sharing CBC News Cannabis is generally ready for harvest between mid-September and mid-October, according to a former federally regulated grower. (Siavash Dezvareh/CBC) comments A series of cannabis thefts have been reported in and around Waterloo Region, according to police, as the midpoint of the plant’s harvest season arrives.