DUH!!! It's John Gorka, and the words are here, thank you Google:

BRANCHING OUT
Words and Music by John Gorka (Blues Palace Music/ASCAP)

When I grow up I wanna be a tree
Gonna make my home with the birds and the bees
And the squirrels, they can count on me
When I grow up to be a tree

I'll let my joints get stiff, put my feet in the ground
Take my winters off and settle down
Keep my clothes 'til they turn brown
When I grow up I'm gonna settle down

And I'm gonna reach, I'm gonna reach
I'm gonna reach, reach for the sky
I'm gonna reach, I'm gonna reach
I'm gonna reach 'til I know why

When the Spring comes by I'm gonna get real green
If the dogs come by I'm gonna get real mean
On windy days I'll bend and lean
When I grow up I'm gonna get real green

If I should fall in storm or slumber
Please don't turn me into lumber
I'd rather be a Louisville Slugger
Swingin' for the seats

I'm gonna reach, I'm gonna reach
I'm gonna reach, reach for the sky
I'm gonna reach, I'm gonna reach
I'm gonna reach 'til I know why