Varieties of yucca trees grow all over the U.S. They are hardy through zones 4 to 11, so it is no wonder this tree is so wide spread. Caring for yucca trees is easy overall as long as they have dry soil and plenty of sun. If you grow a yucca tree, you need to know how to trim it to make it a more attractive specimen. Like the rest of this plant's care, however, trimming a yucca tree is easy.
Prune your yucca tree in the early spring. Trim off any dead leaves at the base of the yucca tree.
Trim back any broken yucca tree leaves at the base of the tree.
Trim off the flower stalk when it is finished flowering. Cut it off at the base of the yucca tree.