The City of Calgary does an annual recycle program for Christmas trees and uses the trees for a free tree mulch program. This program runs from December 27, 2006 to January 14 2007. Full details can be found at the City of Calgary website.

Here are the drop off locations as per their website:

Northwest

• Mount Pleasant Arts Centre - 523 - 27 Avenue NW
• Former Fire Hall #10 - 1711 - 20 Street NW
• Fire Hall #15 - 6328 - 35 Avenue NW
• Fire Hall #17 - 3740 - 32 Avenue NW
• Silver Springs Community Centre - 5720 Silver Ridge Drive NW
• Edgemont Reservoir - 6911 Edgemont Drive NW
• Spyhill Landfill - 69 Street and 112 Avenue NW
• EMS Station #6 - 1940 Westmount Blvd. NW

Northeast

• Calgary Zoo - St. Georges Drive NE (North lot)
• Former Fire Hall #4 - 16 Moncton Road NE
• Fire Hall #22 - 7199 Temple Drive NE
• Cardel Place - 11950 Country Village Link NE
• Huntington Hills Athletic Park - 7920 - 4 St & Huntstrom Dr. NE

Southwest

• Fire Hall #2 - 1010 - 10 Avenue SW
• South Calgary Community Association - 3130 - 16 Street SW
• Fire Hall #8 - 1720 - 45 Street SW
• Fire Hall #11 - 5536 - 4 Street SW
• Parks compound -10312 Sacramento Drive SW
• Fire Hall #20 - 3110 Sinai Street SW
• Fire Hall #24 - 2607 - 106 Avenue SW
• Fire Hall #29 - 7027 - Coach Hill Road SW
• Woodbine Athletic Park - 12625 - 24 St SW

Southeast

• Fire Hall #9 - 2515 - 78 Avenue SE
• Fire Hall #12 - 123 - 44 Street SE
• Park 96 - 14660 Parkland Blvd SE
• Fire Hall #23 - 2727 - 26 Avenue SE
• Midnapore Athletic Park - Sun Valley Blvd SE (across from Centennial High School)
• Fire Hall #30 - 6 McKenzie Towne Gate SE
• East Calgary Landfill - 68 Street and 17 Avenue SE
• Shepard Landfill - 52 Street and 114 Avenue SE