Answer:
I am flora, not fauna. I am foliage, not trees. I am shrubbery, not grass. What am I?
I am the key that is the hardest to turn
I am the only vegetable or fruit that is never sold frozen canned processed or in any other form but fresh.
I have a strong affection for belly buttons.
The more of me you take, the more I appear behind you. What am I?
Give it food and it will live, give it water and it will die.