Question

Why do you feel they are growing on their own?

Answer 1

In forests, seed dispersal takes place by means of air, water and animals.
The conditions required for the germination of seeds are present in the forests. Seed germination takes place in the presence of air, water and warmth of sunlight. During this process, a seed gives rise to a seedling, which further grows into a plant.
In this way, plants grow on their own in forests.