Broadside

Difficulty: Easy

Broadside is an achievement in Plants vs. Zombies 2: It's About Time. It requires the player to hit an Imp Cannon with a coconut from a Coconut Cannon. It is worth ten points in Game Center for iOS devices and 1,000 XP on Android devices.

Strategies
Use the Coconut Cannon wisely when there is an Imp Cannon on your lane. Avoid putting it on the landing spot, or the Imp Pirate Zombie will eat it. Make sure no other zombie gets in the way so you can land a shot at the Imp Cannon. Try to avoid letting the Imp Cannon last long or it will explode.

The back lane is one of the best places to plant Coconut Cannons, so they will not be eaten and the best time to fire on an Imp Cannon is when it is still being wheeled out (provided no other zombies are in front of it). If you are really frustrated with other zombies blocking your shot (including fired Imps), you can feed Plant Food to the Coconut Cannon to push all the zombies on the lane to defeat them all, including the Imp Cannon.

The best way to do this is once the Imp Cannon appears, blast it immediately, since the damage is sufficient enough to obliterate the Imp Cannon in one hit.

Trivia

 * Broadside is the side of a ship; the battery of cannon on one side of a warship; or their simultaneous (or near simultaneous) fire in naval warfare.