You need 4 packages for queen size.

Went to Jack Dempsey website and it states that you need 5 packages of the 18 x 18 inch (packed 6) blocks for this quilt. You will also need to purchase floss, batting, backing fabric and fabric for a border if you want one. I am a quilter so I am advising you to buy a low loft batting for this project, and choose your quilting design based on it's intended use. It is a pretty pattern.