Real, artificial, or rented — which is greenest?
A lifecycle analysis by Montreal-based Ellipsos found that an artificial Christmas tree must be reused for at least 20 years to have a lower carbon footprint than buying a real tree annually. A real tree has a carbon footprint of about 3.5 kg CO2 (if composted) — it absorbs CO2 while growing and returns it when decomposed. An artificial tree (typically PVC and metal, manufactured in China) has a footprint of ~40 kg CO2 from production and shipping. If a real tree goes to landfill, anaerobic decomposition produces methane, increasing impact to ~16 kg CO2e. The average artificial tree is kept only 6 years before being discarded (to landfill, as PVC is not recyclable). Real trees support local agriculture: 350-500 million real trees grow on US farms at any time, providing habitat for wildlife and producing oxygen. Each acre of Christmas tree farm produces enough oxygen for 18 people daily. The most sustainable option is a living potted tree that can be replanted — zero waste, zero disposal emissions.