Are you worried about bleeding? If so, may I suggest doing a bleed test? Take a white cotton towel, dampen a corner, and rub it on the fabric for a few seconds. If the towel shows any color, you will need to treat it to prevent bleeding. This method has always worked for me - it's written by a quilter who is a professional hand-dyer.
https://www.colorwaysbyvicki.com/upl...edingquilt.pdf