Heartmoss grows extensively in the forests around the Dappled Haven, and is known but less common elsewhere in the world. The elves there have encouraged its presence as much as possible over many centuries, although it cannot be cultivated and remains a wild and fragile plant even there. It thrives on bare granite in damp, shady areas, particularly around streams and springs, where it forms lush carpet-like patches of deep green with hairlike tendrils extending above its leaves. It is bland but nutritious, used as famine food by other cultures and races, but to eat it is a waste of its potential.
The value of Heartmoss to elves of the Strawberry Creed is as a dye, most frequently used on Sharfuthe silk. It produces a two-toned, shimmering effect that changes between red and green depending on the angle of the light; the intensity and balance of the effect may be controlled with different mordants or concentrations. Heartmoss-dyed Sharfuthe silk comprises one of the Dappled Haven's most profitable exports, and clothes its finest elves.