Answer:
I am the only vegetable or fruit that is never sold frozen canned processed or in any other form but fresh.
I go around a yard but does not move.
I am milky white and scares people.
I have roots nobody sees. I am taller than trees. Up, up I go but I never grow. What am I?
I am the word that has three syllables and twenty six letters.
No matter how little or how much you use me, you change me every month.