How many types of yucca extract are there?
Two.
North American Yucca: Grows mainly in the deserts and scrublands along the Mexico-U.S. border, with a high saponin content, making it suitable as an animal feed additive.
Domestic Yucca: Primarily cultivated in places like Yunnan, it has a low saponin content, making extraction insufficient; it's generally used as an ornamental plant in urban landscapes.
North American Yucca:
Domestic Yucca: