I would mix, and I always wash.

I would mix them. I mix all kinds of fabric. I do not prewash.

I fix batiks with prints of solids a lot. If I like them together...then they go together. I prewash everything.

Absolutely. I create many quilts from my stash which includes all types of quilting fabrics. Mixing the two types of fabrics will provide textures and variations in color.

If I like how they look together, yes.

If you're asking because you need a solid black to set off your batiks, RJR now has a solid black batik. Keepsake Quilting has it online for less than $10 a yard, but other places also sell it. RJR Fabrics Blossom line, 3142-001 solid black.

I haven't tried it yet, but definitely will. Personally, I don't like the combination of batik and cotton broadcloth. The difference in thread count is much too drastic for me.

And I prewash everything.

Thank you to all who answered. Your advice has helped enormously.