And God said,
Let the earth bring forth vegetation, the plants yielding seed, and the fruit tree yielding fruit after its kind, whose seed is in itself, upon the earth:
and it was so.
All Commentaries on Genesis 1:11 Go To Genesis 1
Augustine of Hippo
Here we must note the plan of the Ruler of the world. Since the crops and trees created are different in species from earth and water and so cannot be counted among the elements, the decree by which they are to proceed from the earth is given separately, and the customary phrases describing their creation are put down separately. Thus Scripture says, “And so it was done,” and then there is a repetition of what was done. There is separate mention also of the fact that God saw that it was good. But since these creatures cling fast to the earth and are joined to it by their roots, God wished them also to belong to the same day [of creation]. .