Jane just raise the elevation of the bed so the dirt will hold back the sand. They will have a symbiotic relationship. Save your money, edging is best used for small paver applications. From the picture it looks as though it is layed on existing soil. If so then be aware that it will eventually heave and sink form season to season.

If you want to soften the look of the stone (which I would want to do) you might consider ajuga reptans. I chose a bronze-colored version (I think burgundy glow) and it worked very well. I also have a rose bed that is edged with medium-sized river rocks and I planted prostrate rosemary to soften the transition from bed to rock. It tumbles over the stones and looks great. Sometimes using rocks to line/edge a flower bed looks too puny without something tumbling over the rocks, IMHO.

Pieces of flag set on edge

Nice job of matching up your stones. Did you do that your self? I find that so much fun but time consuming! If you end up planting on the edge with anything be sure to plant it far enough away, or like me in a few years you will be digging it all up and moving it back becaues it is covering the path. Mini hostas are a nice edger, spaced with other things like ajuga. Coral Bells are nice, too

Thank you for the compliment, I did it all myself. I do have some adjustments to make, but it will be a lot easier since I have a layout that suits me. We just received a load of cracker dust which I am going to put between the smaller cracks, and a size bigger for the larger spaces and the edge.
I still do not know what plants I will place on the outer side of the walkway. I already have some Dragon's Blood sedum, and bronze ajuga. I saw a tri-color sedum that is short and that gets pretty pink flowers that I definitely want to try. All areas of this walkway get sun, some more than others. Do you think it looks better to mix the plants or to keep to one or two varieties? It takes some of the joy out of gardening when it does not come out as you visualized it would. Since I work full time outside the home, my 'free' time is very precious to me.
Thank you for your suggestions.
Jane

you could use smaller stones, and bury them in a trench so only top shows, i think that would look the most natural

I have decided to use smaller stones and gravel along the edge of the walkway, and plant sedum plus ? next to it at the border. I have found tri-color sedum at a local Amish nursery for $2.00 a quart size. I got 6 and I will separate them into at least two ea. I am going back to get more. I think this is my favorite sedum - at the moment anyway LOL. They also have other low varieties which I will consider. I almost let out a big whoopee! since I was hunting for this variety in my area at the larger garden centers, and the price is great. I will post a photo as the walkway progresses.
I also got some ajuga, hens and chickens, and Burgundy Glow ajuga, reddish-purple/varigated w/white & pink. Is it possible for Burgundy Glow ajuga to turn into the dark burgundy/dark green color? I am pretty sure I had the BG variety before, but it is returning as the dark, dark burgundy purple/dark green, no white or pink. It is making a great short ground cover, but I like the lighter varigated colors better.
Thanks everyone for your suggestions. Jane

As far as ground cover between the rocks, I like the mixed look better...
Another suggestion might be some elphin thyme...that's my favorite in my paths...they get a really dense coverage.

Good luck,
-S

Stone dust, once compacted almost turns to a stone itself. All are pretty good advice. But I think a stone dust and raising the soil around the edges should work well. Also mention is the fact you layed it on bare soil. Stone dust layed down and tamp first on top of good drainage works best increasing drainage,eliminating the heave and giving the stone more uniform support on the irregular bottom surface.