Hi there, sounds like Granmother's Flower Garden is a popular quilt! I am making my first one and bought a few clear template plastic sheets at JoAnns and cut my own out using a template. I can reuse and reuse. However, my quilt store ordered in the hexagon templates to cut out the fabric for this quilt. I am looking forward to getting to cut them out using the machine. I never thought about using squares, this may have been easier.
I also saved the clear plastic liner that comes in my turkey bacon packages and used them for templates - works great!