The text I cited says that man was placed in a garden that God had previously created.
Your translation is wrong.
And it's that simple.
If you think otherwise, prove it.
I think you're overlooking one thing:
If the plants need water and man,
and if god didn't
place man in the garden, even though man was actually created before the plants,
then God would still have had to step in and take care of the plants in the garden before that man was placed in it.
Otherwise the man would have had to have taken care of the plants before he was placed there.
™ Version 4.2