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
Douglas County search and rescue Douglas County search and rescue Douglas County Search and Rescue is an all-volunteer organization in Douglas County within Douglas County Sheriff's Office. With approximately sixty active members year round, Douglas County's Search and Rescue (Douglas SAR) responds to searches for missing children and adults, evidence and other search requests in the county and on mutual aid calls anywhere in the state of Colorado. Douglas SAR is a mountain rescue Type I certified team able to handle the toughest terrain and remain out in the field without resupply for extended periods. Today the team, headquartered in Castle Rock, CO at "13S