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
Michael Fraser, Baron Fraser of Kilmorack died in London in 1996. His papers are held at the Hoover Institution Library and Archives at Stanford University. Michael Fraser, Baron Fraser of Kilmorack Richard Michael Fraser, Baron Fraser of Kilmorack, CBE (28 October 1915 – 1 July 1996) was a British Conservative Party political administrator. The Conservative historian Lord Blake wrote that Fraser "will go down to history as a figure comparable only to Gorst under Disraeli or the famous Captain Middleton under Salisbury". Fraser was born in Aberdeen, the son of Dr Thomas Fraser CBE DSO TD DL, and of Maria-Theresia Kayser, from Hanover. He was educated