The idea is that as it is washed and dryed the edges will fray. However, this quilt hangs on a banister so doesn't get used much so the edges haven't frayed significantly yet.
We had an elderly gentleman (80+ years) stay with us a few weeks ago. He is a machine quilter in St. George, Utah. He pointed out to me that I "forgot" to finish the edges.....and....did I really "like" that look? It was quite funny.