Had to have a look in-game to see if the roots were showing
No, even though it might look a little odd, (I'm not entirely sure how tall wild grass can grow) it's intended. I believe that I have a better chance of creating some horror if I obstruct the vision of the player. If the player or a monster steps on the grass it pushes (animates) and makes a sound.. So you are in an area where the lights are randomly flickering, it's dark and your vision is obstructed by vegetation - but you can hear something moving about in the grass, searching for you!