The tree seems to be a universal symbol in religious and cultural traditions around the world. In Judaism the Torah is referred to as the Tree of Life. In Buddhism the Buddha attained enlightenment sitting beneath a tree.
In any area of human life, when someone begins an endeavour – especially one they hope will endure for a long time, they are, in effect, planting a seed. By their aspirations, their vision of the final result, and by their determination, they plant a seed. And, provided the conditions are right, it will grow.