I actually cut my strips 1" x 18" using a rotary cutter. Here is a pic of my pile of strips before I started tying them onto the wreath.
I had never worked with burlap before, and it was messier than I thought it would be. I had little pieces of it everywhere! It was all over the floor, and me! I didn't end up using all of the burlap that I had cut. I still had a pile of burlap when I was done with the wreath.