Answer:
What goes around the wood but never goes into the wood?
I begin and have no end. Eventually, I will be the ending of all that has begun. What am I?
I am flora, not fauna. I am foliage, not trees. I am shrubbery, not grass. What am I?
I went into the woods and got it. I sat down to seek it. I brought it home with me because I couldn’t find it. What is it?
Angels and pilots work with me.
No matter how little or how much you use me, you change me every month.