The City of LA Bureau of Sanitation has a few solutions for recycling your Christmas tree. Chief among them is the curbside collection program.
If your Christmas tree is too big to cut and place it inside the green waste bin place the tree next to your green waste bin on collection day. If you are using your green bin to recycle your Christmas tree, be sure to remove all ornaments, decorations, tinsels, and the stand from the tree. Then cut the tree in pieces to fit into the green bin, and place the tree pieces inside the green bin for regular pick-up on collection day. Collected Christmas trees will be recycled into compost and mulch.
Other options:
Multi-Family Residential Christmas Tree Recycling
Residents of multi-family buildings are requested to place their Christmas trees at the curbside on the day of collection by the Bureau of Sanitation. Remove all ornaments, decorations, tinsels, and the stand from the tree.
Recreation and Park Locations and Participating Fire Stations – One Day Only!
Recreation & Park and Fire Station locations will accept Christmas trees on Sunday, January 5th from 9am to 4pm at the nearby locations listed below. If you miss the trash pick-up on Saturday this week, then this option might be a good way to get that dry old tree taken care of. Please remove all ornaments, decorations, tinsels, and the stand from the tree.
Griffith Park At Griffith Park, Junction Of Golden State (5) & Ventura (134) Frwys LA Zoo parking lot  Fire Station #29 4029 West Wilshire Boulevard (at Norton Avenue) (213) 485-6229  Fire Station #82 5769 Hollywood Boulevard (at Bronson) (213) 485-6282 ÂOther Locations – click here.