If a tapestry is a throw blanket, (which throw blankets are
usually made by jacquard weaving, unless quilted) are easily
washable in a washing machine using cold water and a gentle cycle.
However a wall hanging that is a jacquard woven tapestry should be
dry cleaned only since there is a backing (lining) and the weave is
much tighter. A dry cleaner with experience in cleaning tapestries
should only be used.