The Christmas Tree Drop-Off Site opens Sunday in Sioux Falls. Christmas trees will be accepted at 301 North Lyon Boulevard, as well as the landfill west of Sioux Falls on 41st Street. The landfill and 301 North Lyon Boulevard are the only locations accepting Christmas trees. It opens December 26, at noon, depending on weather conditions, and will be open through January 8. Hours are Monday-Saturday 9 a.m. to 5 p.m. and Sunday 12 noon to 5 p.m. Residential loads are free.