The Heartland Season 18 Extended Trailer is here! When the future of Heartland ranch is threatened, the entire Bartlett-Fleming family will have to buckle down and adapt. But no adversity is too great when you’re united. Heartland Season 18 premieres on CBC Gem on Sunday, September 29th and on CBC TV, Sunday, October 6th at 7PM. Head to the Heartland CBC Gem or YouTube pages for more. #iloveheartland #trailer