No bush of the field was yet on the earth and no vegetation of the field had begun sprouting, because Jehovah God had not made it rain on the earth and there was no man to cultivate the ground.
As far as I'm concerned the jury is still out, when it comes to whether the creation account is literal.
However for the sake of this discussion, the quotation above demonstrates the problem with using scriptures out of context. We did this a lot when we were JW's and we ended up believing all sorts of nonsense because of it.
Yes...Verse 5 says there was no rain and no vegetation for some time before man was created. But if you continue in Verse 6 it shows that by the time man was created, the entire surface of the earth was watered. Since Verse 5 says that there was no plant life because there was no rain, Verse 6 seems to indicate that this was solved once the earth sprang forth water therefore making it possible for plants to grow once he caused the ground to be watered.
Verse 8 goes on to talk about God planting the Garden of Eden. Just because God chose a specific spot to plant a garden for the first humans, doesn't mean the rest of the earth wasn't vegetated and had wheat, corn and all the other edible plants and fruits we have today, growing wild for Adam and Eve once they were put out of the garden.
5. Now no shrub of the field had yet appeared on the earth, nor had any plant of the field sprouted; for the LORD God had not yet sent rain upon the earth, and there was no man to cultivate the ground.
6 But springswelled up from the earth and watered the whole surfaceof the ground.
7. Then the LORD God formed man from the dust of the ground and breathed the breath of life into his nostrils, and the man became a living being.
The original post posed a question that was supposed to prove that Adam and Eve couldn't have survived once they were put out of the garden because there wouldn't have been time for them to raise crops before they starved. This is easily disproven and any JW worth his salt could have answered this question.