quilting depends on your batting!!!
the batting package tells you how much quilting you have to do, some (like mountain mist) you have to have quilting every 2"...others, like some of the warm & naturals you can have up to 10" between quilting, and there are different measurements for each different batting you may try. so it is always important to read the package (before you buy it) so you know if that particular batting is going to work for what you plan to do.