Tarith
Tarith is a vast planet on the edges of Meliora. Gravity is high. The sky is green, the stone purple. It is a beautiful place full of sweeping forests and stone buildings. The Goddess of the Rising Moon is worshiped there, and has temples dedicated to Her scattered across the planet.
Most of the vegetation on Tarith is slightly sentient and a little psychic. This can have some serious consequences--weeds can ready defenses as hapless gardeners attempt to pull them--and some humorous ones; unhappy fruit trees are liable to trip children who break their twigs trying to reach the ripest of their fruits. One of their most famous plants is the ruka, which produces white cotton-y fibers that turn a deep crimson when exposed to anger or ill intent. Tapestries and curtains woven with ruka fiber are often draped around the entrances to important buildings, or rooms where important people frequently live.
One of the most favored forms of art in Tarith is moss graffiti. Large clumps of moss are blendered with peat and water, the remaining sludge painted on walls in whatever pattern the artist sees fit. The humid air helps, but if one is careful and spritzes the wall every now and again, the sludge will grow into thick, green moss. While this does eventually cause damage to the paint or plaster of the wall beneath, it is generally regarded as a harmless thing.