It takes a long time for zombies to eat it, providing an effective cover for the plants located behind it. Walnut - Walnut is the defensive plant that acts as a shield for the player's plants.
Each sun produced from sunflower adds 25 units to your sun counter.
Planting costs "sun" (sun acts as the currency for the game, required for buying plants), which can be gathered for free (albeit slowly) and also by planting the sunflower plant which generates a sun at regular intervals. The playing field is divided into 5 horizontal lanes, a zombie will only move towards the player's house along one lane. The plants - Pea-shooters, Beetroots, Walnuts, and Sunflowers - are all set to destroy the zombies who dare to enter your backyard. The only way you can stop them is by using your arsenal of plants that will zap the zombies at your command. Plants vs Zombies ( ) is a tower-defense and strategy game which involves an army of zombies trying to enter the house(lawn) and eat your brains.