Tall-nut

The  Tall-nut  is the second defense structure.

Usage
Place in front of your plants to prevent zombies from eating them. Tall-nuts prevent Pole Vaulting Zombies, Dolphin Zombies and Ladder Zombies from going over them, making them a better choice in later levels.

Strategy
Tall Nuts allow plants in the rear to continue damaging zombies without being consumed by larger zombies. However don't rely on them too much, since the player has to wait a long time before planting another Tall Nut