I am going to be installing a flagstone walk. I will be using Spring Hill Flagstone, which is about 2-2 1/2 inches thick and fairly consistent. I am installing them by digging out the sod/soil to about 4-5 inches, installing a compacted 2" base of stone and then using a layer of sand to level the flagstone - much like installing pavers. My question is this: What product should I use to fill in around, in the cracks of the flag stone? Just more sand, or gravel or what looks good. I don't intend on the cracks being bigger than an inch or so. I am also using a plastic paver edging to hold the turf back so it does't grow into the walk. Any suggestions or comments would be greatly appreciated. Thanks, Joe Smith Earthscapes, Inc.