Potato Mine

The Potato Mine is a one-use explosive plant. While it's one of the cheaper plants, it takes approximately 15 seconds (about the time it takes a regular zombie or any other slow zombie to walk three spaces, or half the time it takes to recharge and use it again) to arm themselves before surfacing from the ground. After that, it will detonate the first time a zombie enters their square. It may kill several zombies, if they are perfectly stacked.

Powers
The Potato Mine's main power is to explode when a zombie steps on it.

If Plant Food is given to it, it will arm itself and produce two armed Potato Mines on other spaces.

Trivia

 * The Wall-nut's plant food ability is different in The Revenge of Zomboss, being to kill all zombies in a line.
 * It is now the same as the others after the last update.
 * Two potato mines are suficient to kill a Gargantuar.