How to Grow Plants Between Stepping Stones

http://www.perennialfarm.com/images/Ground_Cover.pdf

http://www.finegardening.com/plants-pathways

http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=274335&isprofile=1&adv=thymus&chr=12

http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=258921&isprofile=1&basic=leptinella

North Carolina State University Natural Learning Initiative: Installing Stepping Stones

http://design.ncsu.edu/natural-learning/sites/default/files/Stepping%20Stones_Information%20Sheet.pdf

University of Minnesota Extension: Crevice Plants

http://www.extension.umn.edu/garden/yard-garden/landscaping/best-plants-for-tough-sites/docs/08464-crevice-plants.pdf