Christmas tree pests and weeds The pathogen often makes Douglas fir trees unsalable as Christmas trees and affects the Christmas tree farming industry. Douglas firs are also affected by "Phaeocryptopus gaumanni" which causes Swiss needlecast. Red band needle blight is a fungal disease which affects coniferous trees, particularly pine, with a worldwide distribution. The disease is caused by the fungi "Dothistroma septosporum". Since the late 1990s its appearance in the United Kingdom has increased, among the most affected species is Corsican pine and the disease has been a significant problem in Thetford Forest. Though the disease spread rapidly during September 2007 Christmas tree growers remained
Douglas Cole (historian) Print". They divorced in 1983. Cole later married Christine Mullins. Cole's papers are held at the Simon Fraser University archives as the "Doug Cole fonds". Douglas Cole (historian) Douglas Lowell Cole (9 December 1938 – 18 August 1997) was an American-Canadian historian. Cole specialized in the art and culture of the Northwest Pacific Coast, and from 1966 until 1997 served as a professor in the history department at Simon Fraser University. Douglas Cole was born at Coulee Dam, Washington. His father was a construction worker and labor union activist. His mother taught elementary school. In 1960 Cole earned his bachelor's