Conifer trees are dispersing pollen earlier due to climate change Posted : 2021-05-12 15:09 Updated : 2021-05-12 15:10 Korean red pines before (left) and after (right) pollen dispersal / Courtesy of the Korea Forest Service Korean nut pines before (left) and after (right) pollen dispersal / Courtesy of the Korea Forest Service By Ko Dong-hwan Conifer trees in Korea today are beginning to disperse pollen earlier, compared to 10 years ago, according to the Korea Forest Service. The government forest research agency said Monday that the country's four most common conifer trees ― Korean red pines, Korean nut pines, Korean firs and spreading yews ― have begun dispersing pollen several days earlier during the past three years than they did in 2010.