You will not need to wash your bed skirt as frequently as you did your sheets and comforter. Ideally, you should wash your bed skirt whenever you notice a stain on it. But if you are someone with allergies, you may want to wash your bed skirt once a month.
Washing your bed skit every month will keep dust from accumulating in your bedroom. While you're washing your bed skirt, be sure to carefully follow instructions before you place it in the washer. It is usually a good idea to wash your bed skirt gently to lessen the risk of your fabric fraying.