In Genesis 2 God plants a garden.
Genesis 2 8 The LORD God planted a garden toward the east, in Eden; and there He placed the man whom He had formed.
This same garden of God keeps popping up in several places in scripture, Ezekiel 31 being one such place notable for it's characters.
Ezekiel 31:3 Behold, the Assyrian was a CEDAR in Lebanon with fair branches, and with a shadowing shroud, and of an high stature; and his top was among the thick boughs.
So this tree is a rational being after all in the Assyrian being a species of a tree, even a ruler, signified as a Cedar.
The CEDARS in the garden of God could not hide him: the fir trees were not like his boughs, and the chestnut trees were not like his branches; nor any tree in the garden of God was like unto him in his beauty.
Therefore there are others such cedars, where? In the garden of God.
Gen 2:9.Out of the ground the LORD God caused to grow every tree that is pleasing to the sight and good for food; the tree of life also in the midst of the garden, and the tree of the knowledge of good and evil…
So these are the trees that are were pleasant to sight made to grow in Gen 2:9. among whom was the offending tree in the midst.
In Isaiah 5 in the midst indicates circumstances rather than a literal location of the referent in his/their environment, which is the aspect illustrated in the imagery of a tower in the midst of the vineyard, and which tower are the laws, as implied later in God's explanation of the parable.
To mean of these were the tree of life and that of the knowledge of good & evil both of which God placed in the midst of this garden, but which garden was man's to keep, just as the vineyard was Israel's to tend in Isaiah 5.
My Well-beloved has a vineyard On a very fruitful hill. 2 He dug it up and cleared out its stones, And planted it with the choicest vine.
He built a tower in its midst…
So He expected it to bring forth good grapes,
But it brought forth wild grapes.
The imagery of planting trees to signify establishing a category of a congregation is also in Psalm 80:8 and Isaiah 61:3.
Therefore, on what other grounds should the trees in Eden be taken as a literal vegetation in light of these scripture?