It looks like your quilt was tied. This allows for a lot more wiggle room in the washer/dryer and will allow the seams of a loosly woven fabric to fray apart.

So, When piecing with flannel I take 1/2 inch seams instead of 1/4 inch seams especially if you ar going to tie it rather than quilt it.

Quilting will help prevent this, even if its just in the ditch quilting.

I agree with Azwendyg...and you tied it so that gives it a lot of wiggle room. Does you washer have a agitator? that will give it more room to pull seams apart; you could in addition to pre-washing fabric surge the seams to lock them...Sorry that it happened. I have seen it happen a lot. I save flannel for raggy shaggy quilts or backs where it isn't cut up a lot.

Is it flannel? Good idea is to use good 1/2" seams on flannel...it's very unpredictable in the ravelling. I would pink all the edges of flannel. Also, you must wash it all before in warm and dry it hot to get it all to shrink. Flannel is such a pain, I don't use it much at all. So sorry this happened to your quilt...it is really cute!!

no the back is the only flannel and did not fray at all the front is all cotton fabric dont use any other on baby quilts i will be doing a finishing zig zag seam from not on. and the hand tied was not it i hand tied the last two which were about half flannel and half cotton a few little frays here and there but this is almost the WHOLE quilt top. i am hoping joanns will do something not holding my breath but i can hope

make sure the 1/4 is on both side of your material, some time when we sew it will slips.

I am so sorry this happened. I would try SID along with/or without the ties to anchor it in place.

I think what happened is that you may not have had a good , at least 1/4 inch seam allowance and the quilt appears to be tied. Looks like it was not tied close enough and when the washing machine agitated the fabrics pulled more since the tying was so far apart. When you read on the batting packages how far apart the quilting needs to be, at a minimum, I think same might apply for the tying. Too much pulling on the fabrics during the washing process.

i did wash it by itself maybe should have put another blanket or something else with it

when ever i use flannel (or any heavier than cotton fabric) i adjust my pattern and use 1/2" seams. one way to make sure you have the top and bottom even for piecing you should have the bottom fabric show just a thread or two beyond the top piece that way when you sew you know the back is caught in the seam just as well as the top. also, prewash flannels. thin, loose weave, single sided flannels fray the most, if possible always try to find the thicker double sided flannels. but i think if you make sure your fabrics are evenly together and you use a wider seam you will not have this problem anymore.

I'm so sorry this happened to you.