A leaf of grass

I understand we are all leaves of grass - Walt Whitman

To me, 

Your sprout looks to be a tree,

Does the mower miss you?

Does the cow not eat you? 

You are green to the shoe,

Our roots attach at the mud,

So how do you manage growing to heights that are new?

I sprouted out a while ago,

Seeing how times have changed

How new trends have come
I only manage to
Defend my head against becoming glum