Why Does Moss Grow Here?

Beside a shady woodland path lay a stone with a green cushion. A brighter stone a little farther away was almost bare. Puschel stopped beside the green one.

Puschel“A woodland sofa! Just a little small for my tail.”

Flauschi knelt on the path, not on the cushion. She held the green magnifying glass a little way above it. Puschel knelt beside her. The green now looked like a tiny forest of many little plants.

Flauschi“This is moss. It is not a carpet to sit on. It is made of living plants. Look how closely the little green parts grow together.”

Flauschi explained that many mosses like damp places. Water often dries away more slowly in shade than in sunshine. That can help moss. But there are different mosses, and not all need exactly the same place.

Puschel“Then this cushion prefers a spot without sunburn.”

Flauschi“It often stays damp here. Mosses take in water through their surfaces. Fine threads help them hold on. They do not have roots like a big tree.”

Puschel looked at the brighter stone. Flauschi explained that comparing them gave clues, but could not prove everything. Water, light and the surface all mattered. Moss could grow on stones, wood and soil.

Puschel“Can the green at least show us the way home?”

Flauschi“No. Moss is not a reliable compass. It can grow on different sides. We will stay on the familiar path and leave the cushion where it is.”

Puschel pulled his tail back a little so it did not brush the moss. His imaginary sofa had become a tiny forest of plants. He needed no seat inside it to feel amazed.