A flowering cannabis plant is seen during a tour of the Hexo Corp. facility, Thursday, October 11, 2018 in Masson Angers, Que. Shares in troubled cannabis firm Hexo Corp. tumbled Friday by as much as 21 per cent on the Toronto Stock Exchange after it announced Thursday it would issue about 15 million new shares to raise US$25 million. THE CANADIAN PRESS/Adrian Wyld