Economy Canada to legalise marijuana on October 17, says Trudeau Updated : June 21, 2018 06:42 AM IST Trudeau said provincial and territorial governments need the time to prepare for retail sales. The federal government and the provinces also still need to publish regulations that will govern the cannabis trade. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.