It could have come down in some sphagnum moss from Canada.
One of the most common components is Sphagnum moss, although many other plants can contribute.
There is an opportunity to walk on a floating mat of sphagnum moss.
In Japan, the custom is to grow them on a raised mound of sphagnum moss.
Your mom can just fill in the unused space with sphagnum moss or pretty pebbles.
To keep the humidity up substrate like moist sphagnum moss can be added but is not needed.
The acidic water slows the decay of the sphagnum moss and other plants.
Trees can be very dense or sparse; mats of sphagnum moss cover the ground.
The smell of still water mingled with sphagnum moss.
Sometimes plants are sent out bareroot in dampened sphagnum moss.