If you've ever wondered about the enduring popularity of some of America's quintessential crops like squash or pumpkins, the US Department of Agriculture has surprisingly detailed data, with some records dating back to 1868.
And pumpkin and squash don't come even close to sweet potato production in the US
But in 2015, pumpkin production in the US hit a 15 year low, falling by more than 40 percent to 753.8 million pounds. The USDA attributed the drop in pumpkins to reduced acreage in Illinois, the leading producer of pumpkins in the US.
Yams — those oft-misunderstood tubers — aren't even important enough to be measured by the USDA as an agricultural commodity. But Vox's Joss Fong will tell you a little bit more about its confusing history.