Pepper Corn

The Pepper Corn is the premium plant of (undecided) and can be bought for $1.99 or 109 gems. Pepper Corns shoot very fast and become more powerful after firing for certain periods of time.

Suburban Almanac Entry
Pepper Corn has some pretty serious medical problems. For one, he has heartfern that does not seem to want to go away. "It's affecting my life on the homestead and the battlefield. In fact, I don't even HAVE a home any more. Well, let's just say things got a little carried away with the missus. I... I don't want to go any deeper than that. It's pretty scarring."

Plant Food
Shoots a flaming miniature corn cob that does 45 damage to all zombies on the tile, then goes to its maximum heating state.

Strategies
On its own or in a low zombie density situation, it is not reccomended, as too many high health zombies at once can overwhelm it. With support, however, it proves to be fairly useful in taking down numbers of zombies. With lower zombie density, slowing support gives the Pepper Corn more time to kill the target. However, the second heating stage lights the kernels on fire, making ice-based slowing support a bad idea. Plants like Sap-fling or Machine Gum that use other methods of slowing are of good use.

For reference, the Pepper Corn takes 5 seconds to progress through stages and 3 seconds with no zombies to go back to no heating.

Trivia

 * Pepper Corn is the first plant that is both premium and gemium.
 * Pepper Corn is a portmanteau of "pepper" (meaning to hit repeatedly with small projectiles), "peppercorn", and "corn".
 * The ramping up of power is due to real life machine guns having a tendency to heat up and sometimes overheat with repeated or prolonged use.