Reindeer "Moss" (cladonia spp) is actually a lichen, and is gray-light green in color and forms pillow-like colonies of dense, branching ground cover. It grows in sandy soil. This plant is spongy and rubbery when moist, but becomes dry and brittle when dormant and will crunch if stepped on.
Highly Recommended with this product: New! Moss-Tac moss adhesive to hold your moss to any substrate, for increased success in growing! Also Moss Mats for growing moss!