I'm trying to learn from everyone. Can broadcloth be used for backing? Thanks Cheryl

yes maybe a little heavy or may possibly not be 100% cotton if that matters to you it is a personal choice unless you are afraid of the quilt police LOL

Don't worry about the quilt police...they are more interested in those of us who should know better! It'll be alright, I'll keep 'em off your trail.

Seriously though, the only reason to worry about it not being 100% cotton is if you don't prewash your cottons, they may shrink while anything with poly in it won't. Other than that, it's all about how tight a weave you prefer for your fabric, and whether the broadcloth is the right texture for what you want to work with. If you're asking about sturdiness, it's perfectly fine.

Prewash everything and you should be good tho it usually is a little heavier

Yes!!! I got a great piece from Fabric.com for my King size quilt. I would make sure it's all cotton though.

Some of my first quilts I backed with broadcloth ... and pretty quickly came to regret. It just doesn't behave like cotton does - the added poly made the quilt too hot (even in Canada, eh!) - just doesn't breathe like the cotton does.

But really, it depends on how you will be using the quilt - lots of utility or donation quilts will be just fine. The ones I've worked on going to missions for the homeless are made from a complete mish-mash of fabric.