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
Gold-Tree and Silver-Tree fell down dead. The prince, Gold-Tree, and the second wife lived happily thereafter. Gold-Tree and Silver-Tree Gold-Tree and Silver-Tree is a Scottish fairy tale collected by Joseph Jacobs in his "Celtic Fairy Tales". It is Aarne-Thompson type 709, Snow White. Others of this type include "Bella Venezia", "Nourie Hadig", "La petite Toute-Belle" and "Myrsina". A king had a wife, Silver-Tree, and a daughter, Gold-Tree. One day they walked by a pond, and Silver-Tree asked a trout if she was the most beautiful queen in the world, whereupon the trout said that Gold-Tree was more beautiful. Silver-Tree took to her bed