I love batiks too! However, After seeing a green and purple batik BLEED onto a friends quilt, I Launder every batik I bring into my house. I have had some turn the water a very brilliant color, and some that I thought would bleed did not. They are exquisite in quilts and very easy to work with. But I do not chance them running any more. Wash in hot, and dry on gentile warm setting. Iron with a spray sizing and they are as good as new.
Happy Quilting,
Susan