FTP, name this tree found primarily in the Mojave desert, the namesake of a national park in California.
It is hypothesized that they require freezing to flower because the cold damages the branch and stimulates growth. The plant may reproduce from rhizomes or seeds and its flowers require pollination from the yucca moth.* Unlike most trees, this one does not have annual growth rings and, in fact, its trunk consists of thousands of small fibers. They were supposedly named by Mormon settlers, who believed that the tree's upraised branches resembled that of a biblical patriarch. FTP, name this tree found primarily in the Mojave desert, the namesake of a national park in California.
It is hypothesized that they require freezing to flower because the cold damages the branch and stimulates growth.
Joshua Tree or Yucca brevifolia