Koke is the Japanese word for moss. It does not specifically denote any specific species but rather moss in general. It has taken place of lawns and grassy expanses in Japanese gardens since Heian Period (794 - 1185).
Growing well in Japanese moist climate, mosses create a tranquil atmosphere, conducive for contemplation and meditation.
For me, I love being surrounded by all things green. All around me. ^^
More green, in the tranquil setting in Kenrokuen.
Don't you just feel relaxed when you see them? I did!
Seeing all these moss photos makes me crave for this