Dragon stones (Ohko rock) are very coarse-pored, relatively lightweight clay stones. The strongly structured surface allows succulent plants like Mexican Pinguicula to root deeply into the stone and find strong support. Dragon stones are also very popular in the scaping area, as they do not harden the water and, due to their natural coloring, enable unique, nature-like arrangements.

Small = A stone about the size of a hand (5-10cm).
Large = A large stone (15-30 cm)

Note: Since dragon stones are a natural product, the shape, color, and especially the size of the stones can vary significantly from one another.