City of Tucson announces TreeCycle program; will not collect trees from curbs, alleys The city of Tucson's TreeCycle program runs through Jan. 17. (Source: City of Tucson) By KOLD News 13 Staff | December 11, 2019 at 11:28 AM MST - Updated December 15 at 5:28 AM TUCSON, Ariz. (KOLD News 13) - Once Christmas is done, the clock starts ticking to get your dried and potentially dangerous Christmas tree out of your home. The TreeCycle Program provides a way for that tree to continue to be of good use - by being converted to compost. The program runs from Dec. 26 through Jan. 17. In a change from last year, the city has discontinued the Merry Mulch program for residents. Instead, the ground up trees will be used at the city’s new compost facility.