Is it true that moss only grows on the north sides of trees?

Question

If so, why?

Answer 1

No, only most often. It can grow entirely around a tree if there is enough moisture and shade and protection from the wind, but it will still be thickest on the northern side.

The further north you go the more the effect is noticable, and it is reversed in the southern hemisphere due to the changes in the angle of the sun.

Answer 2

Sometimes.
It depends upon where you are.

Moss dessicates easily (unlike lichens) and needs protection from wind. In Oklahoma, prevailing winds are from the south- providing a shelter from the wind on the northern side of trees... where moss is found. Thus the rule holds up in Oklahoma.

I don't know what the wind patterns are like where you are, so I can't give you a definite answer.

Answer 3

Only on trees that are solitary. Because moss likes to grow more on the shady side, but in the woods it's shady everywhere.

Answer 4

No. It will grow wherever there is shade and moisture.

Answer 5

No!