Christmas tree pests and weeds of different pests, most of which cause cosmetic damage to the trees, important in the Christmas tree industry. The balsam woolly adelgid ("Adelges picae") are small soft-bodied insects which attack the Fraser fir. The insects appear as white, woolly spots on the tree and are fatal to the fir if left untreated. The woolly adeligid was native to central Europe where it affected the silver fir; it was introduced to the United States, where it has no known native predators, before 1900. Balsam twig aphids ("Mindarus abietnus") are another type of tree pest which affects fir and spruce trees in
James Douglas, Lord of Douglas James Douglas, Lord of Douglas Sir James Douglas (also known as Good Sir James and the Black Douglas) (c. 1286 – 25 August 1330) was a Scottish knight and feudal lord. He was one of the chief commanders during the Wars of Scottish Independence. He was the eldest son of Sir William Douglas, known as "le Hardi" or "the bold", who had been the first noble supporter of William Wallace (the elder Douglas died circa 1298, a prisoner in the Tower of London). His mother was Elizabeth Stewart, the daughter of Alexander Stewart, 4th High Steward of Scotland, who died