Merry Griff-mas, Humboldt. Your favorite nature guide John “Griff” Griffith has returned with another informative video.

In today’s episode, Griff riffs about the history of Christmas trees and explains how to identify the kind of tree that may be in your home.

“A lot of your Christmas trees are actually conifers,” Griff says in the video. “Conifers should be called cone-ifers because they’re cone-bearing evergreen trees.” 

Griff also talks about how conifers can lead to biodiversity loss in California’s oak woodlands. Watch the full discussion in the video embedded at the top of this story.