Fruits and shoots of different cultivated plants grow on the branches of one tree (on one vine) or certain plant has a tree form that is alien to it in nature
One of the trees is the principal, original one (emerged before all the other; ancestor of wild or cultivated plants; ocean or rivers inside it; world axis; higher than all the others; overshadows sky)
There is (or was) a tree on which souls of still unborn babies grow, which leaves transform into people, or which trunk is covered with female breasts or flowers that innumerable babies are sucking