For The Washington Post, Tim Meko and Lauren Tierney:
Before the 1930s, Christmas trees typically were cut down on an individual’s property or out in the wild. Now, tree farms in all 50 states (yes, Hawaii too) are where most Christmas trees come from, accounting for 98 percent of live Christmas trees brought into homes. These farms churn out many kinds of conifers, but two main regions — Clackamas County near Portland, Ore., and the Blue Ridge Mountains of North Carolina — produce the most.
I wonder if we can see a similar map for artificial Christmas trees.