Answer:
I was was before was was was.
I am flora, not fauna. I am foliage, not trees. I am shrubbery, not grass. What am I?
Deep, deep, do they go. Spreading out as they go. Never needing any air. They are sometimes as fine as hair.
What gets sharper the more you use it?
The sun bakes me, the hand breaks me, the foot treads on me, and the mouth tastes me. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.