Less than a week before Montreal’s annual Osheaga festival, the event’s organizers are warning that even though cannabis will be permitted on site, only sealed containers from a government source will be allowed.A tweet published Saturday on the festival’s Twitter page reads that all cannabis products brought onto the site must be legally purchased from Quebec Cannabis Society (SQDC) or an approved non-Quebec cannabis store and in a sealed container that has never been opened.Story continues belowRelated