Two-spotted mites (Tetranychus urticae) may occur on some species of yucca, such as Spanish bayonet and mound lily yucca (Yucca gloriosa, USDA zones 6 through 11). Yucca Care Instructions.LightThe Yucca plant is one garden and houseplant which will be quite happy with as much sun as you can give it. When Yucca get too tall just cut the top off, and new heads will grow. Repotting your Yucca Plant. The chosen shoot should have multiple leaves at least 10 centimeters long. its growth will be stunted. As the plant grows taller, to several feet in height, the leaves twist around to give it its common name. Growing Yucca Plants. Growing Yucca Outdoors Vs Indoors. //