Thank you for the question. Remove the dead foliage around the base of your plant along with dead flowering stalks to keep the plant neat. Established yucca have very deep, thick roots that are very difficult to dig out so make sure your plant is growing where you want it to be for years to come.
Read more about yucca here: https://plantfacts.osu.edu/pdf/0247-1199.pdf
Thank you for contacting Extension.