I created a natural stone walkway from my patio to my pool. it is uphill and curved. I dug down 9" added 1 1/2 ton of 3/4" stone 4" thick. I hand tamped the stone. I then added 1" of granulated stone and hand tamp that as well. All the stones varied in size and thickness because they were all found on my property. I now have a beautiful walkway with no idea on what to fill the joints with. I could use cement, but could take a while and be very tedious, i could use a product i heard about that comes in powder from that you put in the joints and then mist it occassionally throughout the day and it hardens like cement, i could fill them with dirt and ground covering thyme seeds, or i could listen to your suggestions since I am undecided and don't know if my second suggestion would actually work.
I don't want the stone to move or loose its form.
I am attaching a picture.