DPW will offer free Christmas tree mulching services to Baltimore City residents from Monday, January 3, 2022, through Saturday, February 5, 2022. Tree mulching is a drop-off event. Residents must bring their trees to the Northwest Residential Drop-off Center, located at 2840 Sisson Street, from 9:00 a.m. until 5:00 p.m., Monday through Saturday. For residents who cannot bring their tree for mulching, DPW will offer curbside tree collection starting now through February 5.