Trees and rocks exist interdimensionally. They have their feet in the earth, their head/branches in the sky – and their beingness/existence in all the dimensions in between.
Just like earth itself, they can contain many different life forms at once because each exists at a different frequency, or angle of existence.
Because beings of other realms are not matter in our earth realm, they make use of matter-based forms to manifest on earth. That is why you get much channeled material coming through humans from the other realms – the energies are speaking through a human vehicle who is willing to serve as a conduit.
There are many kinds of beings in many other realms and you have to be careful who you let work through you, message through you or work with you. There are the highly elevated consciousnesses – Christ speaking through a saint. And there are the dark ones who speak through the weak-willed.
Various energies can also speak or manifest through trees and rocks. Because trees and rocks are pure of being, they will usually house positive energies that are of great benefit to humans. These energies may choose to show themselves to us – or not. It is up to their free will. Why should they show themselves? It is usually to show humans that there are other dimensions than the human one, and by identifying with the shape, the human can move into the formless where the energies truly reside.
Sometimes, too, the energies choose to enjoy themselves by creating art work through nature. They take much pride and joy in form – a technical mastery of shaping form from the realm of spirit. These spirit artists – they are many and varied, not only devas – may work on a micro or macro level. As they do not experience time the way we humans do, they might not mind recurring disasters or epochs of time or ages, for the forces inherent in these processes are their tools to manipulate matter. They may choose to work in stone, earth, water, ice, mist, or plant form.
I am thinking of mountains with distinct “guardian” features; of the thousand feet tall stone HooDoos of the American Southwest; of natural stone sculptures on cliffs such as the 15 foot long Elf’s Love Saga of Southern Illinois; and of great trees with complex stories fashioned into their bark such as the interdimensionl musical performance in Central Park.
The third purpose a life form may choose to work through a tree or rock is that the life form has important work to do on earth, and is incorporating the tree/rock into this work.