Moss On Trees: Navigation Myths Or Reality?

Understanding Moss Growth

Moss typically grows on the north side of trees in the Northern Hemisphere, and the south side in the Southern Hemisphere. This is due to the prevailing wind patterns, which are generally from the west and east in the Northern Hemisphere, causing more moisture to settle on the north side. In the Northern Hemisphere, moss growth can be used to estimate direction, with a general rule of thumb being that moss will grow more densely on the north side, up to 30-40 degrees from the north.

Assessing Altitude and Humidity

Moss growth can also be used to estimate altitude and humidity levels. In general, moss will grow more densely at lower elevations and in more humid environments. At higher elevations, the air is generally drier, and moss growth will be less dense. By observing the density of moss growth on trees, it is possible to estimate altitude and humidity levels with a reasonable degree of accuracy. For example, in a dry desert environment, moss growth may be limited to the shaded areas of trees, while in a humid tropical environment, moss may grow densely on the trunks and branches of trees.

Using Moss in Navigation

Moss can be used in conjunction with other navigation aids, such as the sun, stars, and landmarks, to help estimate direction and location. By combining observations of moss growth with other navigation aids, it is possible to build a more accurate picture of the surrounding environment and make more informed decisions about navigation. For example, if moss is growing densely on the north side of a tree and the sun is in the east, it is likely that the location is in the Northern Hemisphere and that the altitude is relatively low.