When exploring our Mother Earth, we often find that it is possible to find locations with a great sense of age. Usually, this age comes about by the flora that resides in that location. Take a moment to see how nature grows around the bones of the Earth, for example, trees growing around rocks and moss covering boulders. We can recreate this in our aquariums with a careful choice of plants and mosses.
I find that an aquarium without some kind of aged plant can look too young and immature, this is not always the case of course, but using moss can do so much for the aquarist.