Control Plants

All plants within your sight, especially trees and bushes, are able to be moved in any way, except making them bigger/smaller, moving them on the ground, and taking them off the ground. If one hits a creature it does 1D4 bludgeoning damage and the creature has to make a DC16 Strength check or be knocked prone. Rolling below 18 moves the creature 10 feet in the direction the swing was in. 

At higher levels: 1st level spell slot the plants can move in the ground. 2nd level the plants can change size. At the 3rd level, they can come out of the ground and levitate 5 ft in the air, but not move. At the 6th level, it can change form to another plant.