Tiffany Hayes answered:
This is a really big quilt and requires different amounts for each of the fabrics. The pattern is split up into lessons by the block (so the fabric is divided up the same way). The total amount of fabric is about 18 yards. If you are frugal and use up the scraps from the previous block you wont need quite that much, but you can always use the extra on the back or to make matching accessories such as pillows.