Various West Virginia agencies have planned to give a new life to Christmas trees once the annual festival is over. These agencies will collect trees to use them as fish habitat in river and lakes.
via West Virginia Agencies to collect Christmas Trees | West Texas News.

PHOTO BY SUSAN POAG
Collin Stedman, a ninth grade student at St. Martin’s Episcopal School, who was volunteering with his entire ninth grade class, helps Randy Majoria, an enivironmental quality specialist with Jefferson Parish, line one of the fences with Christmas trees in the marsh near Goose Bayou in Jean Lafitte,LA Friday, January 11, 2008. Recycled Christmas trees are places in the marsh as part of the Jefferson Parish Christmas Tree Marsh Restoration Project to help restore the wetlands.
via Get ready to put your Christmas trees curbside, Jefferson, Orleans parishes | NOLA.com.
Reclamation Administration: News and Research on Building Material Waste Prevention