I'm planning to install a short flagstone path in our side yard, about 2 feet wide and about 7 feet long.
I want to plant Thyme between the stones, but I'm wondering what to use to fill the spaces between the stones. I can gather some native soil from another area, or is there a better alternative? Should I plant the herbs directly into our native soil on the bottom of the path and then fill in around them with compost or mulch?
Our soil is clay and this site is sunny until about 1:00PM. In in zone 19 (USDA 9) and frost heaves are not an issue.