The Knockback Moss is a plant that will allow projectiles to have a knockback effect on the zombies stepping on them.
The Knockback Moss will give knockback to projectiles.
As a well known philosopher, the Knockback Moss prefer to help by allowing the zombies to stand back and think about what they are doing. Too bad they can't.
Cost: 100 sun
It can be interesting to plant them near a wall nut, since they will reject the zombies.