Don’t stress about what kind of Christmas tree to buy, but reuse artificial trees and compost natural ones

Read the full story at The Conversation.

Environmentally conscious consumers often ask me whether a real Christmas tree or an artificial one is the more sustainable choice. As a horticulture and forestry researcher, I know this question is also a concern for the Christmas tree industry, which is wary of losing market share to artificial trees.

And they have good reason: Of the 48.5 million Christmas trees Americans purchased in 2017, 45 percent were artificial, and that share is growing. Many factors can influence this choice, but the bottom line is that both real and artificial Christmas trees have negligible environmental impacts. Which option “wins” in terms of carbon footprint depends entirely on assumptions about how long consumers would keep an artificial tree versus how far they would drive each year to purchase a real tree.

See also: Life Cycle Assessment: Comparative LCA of the Environmental Impacts of Real Christmas and Artificial Christmas trees, which was commissioned by the American Christmas Tree Association. The article above notes:

One major shortcoming of this analysis was that it ignored the contribution of tree roots – which farmers typically leave in the ground after harvest – to soil carbon storage. This omission could have a significant impact on the break-even analysis, given that increasing soil organic matter by just one percent can sequester 11,600 pounds of carbon per acre.

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