I guess I am thrown by the word "applique". As Geri pointed out, the background path of a GFG is cut into hexies and then pieced to the flowers (and each other).
I was thinking you wanted to add appliqued flowers to the quilt top. Either appliqued hexies like this:
http://www.pinterest.com/pin/159455643028264591/
or appliqued flowers added to the border of a GFG like this:
http://www.squashhousequilts.com/201...in-oregon.html