Cob Cannon is an upgrade plant, which can be purchased from Crazy Dave at his shop. He is a manual multi-use instant kill plant.
He must be planted on two side-by-side Kernel-pults, which must be placed one in front of the other in the same lane (horizontally). Cob Cannons cost $20,000 to buy in Crazy Dave’s Twiddydinkies. He takes exactly 34.75 seconds to give out a new corn cob.
Once the corn cob is produced, the player can click on the Cob Cannon and can manually launch the corn cob onto an area that the player targets. The corn cob will explode and deal 1800 damage to all zombies in a 3×3 area, like the Cherry Bomb.