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
Henry Bloom Noble finding work as a customs official. His first connection with Douglas was due to his association with Alexander Spittall, father of James Spittall, a Douglas advocate. The elder Spittall was a wine and spirits merchant, whose principal place of business was Whitehaven, Cumbria, although he had a branch established in Douglas. Noble was employed by Spittall as a clerk, rising to the position of manager in 1835, moving to Douglas with his mother. The Nobles took residence in a house belonging to Spittall on the south side of St Barnabas' Square. Noble did not stay in the employ of Spittall