Zombie Gravestone

The Zombie Gravestone is a new addition to the Plants vs. Zombies game, exclusive to Versus Mode in the Xbox 360 Version. The Gravestone acts as both a wall, and a brain producer for the Zombie side. When made, a Gravestone will rise up from underground and start producing Brains for the Zombie Side at about the same rate a Sunflower produces Sun.

Strategy
You really want to build these up as fast as you can, not only do they give you brains to make zombies, they make perfect walls to protect your Target Zombies early in the game. Because of the fact you can also create zombies on a grave, you don't have to worry about where you place them, and should try and get 3 full rows of them. In the beginning of a Versus game, you really want to focus on just building up your graves, and sending a few minor zombies to not only block and protect them, but to put a little pressure on your opponent.

You must be careful though, your opponent can plant Grave Busters on your Gravestones and destroy them, so keep that in mind.

Trivia

 * Unlike graves, Zombie Gravestones only have one appearance, and will always be the same height.