People have found good use for yuccas since pre-historic times.
“Along with lechuguilla, prickly pear, and sotol, yucca was one of the most useful plants to early humans in our state. Literally every part of the plant yields something of value, whether a foodstuff, fiber, soap, tanning agent, medicine, building material, or fuel. Amid hundreds of representations of animals and humans, yucca is one of the few wild plants depicted in prehistoric petroglyphs.”
—Matt Warnock Turner, Remarkable Plants of Texas: Uncommon Accounts of Our Common Natives, University of Texas Press, 2009