![]() ![]() Removing weeds by hand from a thin area of Kenroku-en, a famous garden. Moss is considered to express a wabi-sabi aesthetic. ![]() The mottled texture and colour of moss (like that of rocks) can be used as part of such self-similar, evenly-distributed-salience designs. This self-similarity may be extended all the way down to the scale of surface textures. This property is also seen in fractals and many natural scenes. The size of objects, groupings, and the spacings between them are arranged to be self-similar at multiple spatial scales that is, they produce similar patterns when scaled up or down (zoomed in or out). Stand-out colours, textures, objects, and groups are avoided. Traditional Japanese garden aesthetics avoids contrasts, symmetries and groupings that would create points which dominate visual attention, instead creating scenes in which visual salience is evenly distributed across the field of view. They are also used as an erosion-control groundcover, along the banks of watercourses, under flowing water, and on steep slopes. Moss lawns may be used to cover green roofs. Mosses reduce losses of soil moisture to evapotranspiration when saturated, mosses reduce water infiltration into soil. Moss also hosts symbiotic nitrogen-fixing bacteria, like clover, and when mosses are dried and wetted, they release nitrogen and carbon into the soil. A moss layer can act as a physical barrier to prevent germination of vascular plants. Moss lawns can be used as a living mulch they retain moisture, do not become compacted, and do not require annual replacement. They tend to be too moist to sit upon comfortably. Moss lawns can therefore stand being walked on, but not being scuffed. Mosses are squishy and compress without being damaged, but they are easily torn by tension. ![]()
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