To dream of a hedge represents an aspect of your personality that is secretive or hiding something. A person or situation that is keeping information from you or doesn’t want you noticing something. A bush may also reflect some sort of platform or “smoke screen” being used for deception.
Alternatively, a hedge may represent your own attempt to conceal information or a problem you have. A distraction or barrier you use to keep others from noticing things you don’t want them to.