Plants vs. Zombies Wiki
Plants vs. Zombies Wiki

Defcorn 5 is an achievement that can be unlocked on the iOS, Android, Nook, PlayStation 3, Xbox 360, and PlayStation Vita versions of Plants vs. Zombies. In order to complete it, the player must have five Cob Cannons in a single level.

Defcorn 5 if not achieved


Its name is a reference to Defcon, or Defense Readiness Condition, which is a scale of alert for the U.S. Armed Forces. Ironically, Defcon 5 is actually the lowest state of emergency, while five Cob Cannons in a normal Adventure Mode level is somewhat overkill, meaning the zombies may not be that threatening.


Strategy 1

Take the following plants:

As five Cob Cannons require 3500 sun (much more in Survival: Endless because every time you plant one, the sun cost is increased by 50 sun), it is suggested you play the first Day level, as it contains only normal

This setup allows both the Pyromaniac and the Defcorn 5 achievements.

Zombies and it is also easy to beat. It's also possible to use this in Survival: Day. Use Garlic in every other lane (one, three, and five) to force the zombies into two rows, placing three Spikeweed behind them to incur damage. This will allow you to build up three rows of unthreatened Sunflowers. Whenever the Cob Cannon charges, you can shovel up two Sunflowers and plant another Cob Cannon.

You can easily get this achievement in Last Stand as you start with 5000 sun, enough to plant six Cob Cannons and two Wall-nuts in front of each.

It is not necessary to complete the mini-game to earn the achievement.

Note: If there are Gargantuars in the level, you can also get the achievement Popcorn Party in the process.

Strategy 2

Use the following plants:

Play the first Day level (replaying Adventure Mode). Start out as you normally would, planting Sunflowers on the row closest to the Lawn Mowers. Upgrade your Sunflowers to Twin Sunflowers throughout the level when you can. Plant Peashooters or Cabbage-pults in the row after your Sunflowers (plant according to which lane the Kernel-pults in the third and fourth rows from the back and plant Wall-nuts or Tall-nuts in the fifth row. Place Kernel-pult the level as you normally would, upgrading your Kernel-pults to Cob Cannons whenever possible.

When you reach the final wave, try to take out all the zombies in every row except one (one that has a Cob Cannon in it). Leave one or two zombies in that lane and immediately remove all Peashooters or Cabbage-pults. Now nothing should be attacking the zombies left in the lane, and they should be noshing away on the Wall-nut or Tall-nut (and Pumpkin, if you have one). It is best to have only one zombie left, as this will reduce the Wall-nut's or Tall-nut's rate of deterioration. Now steadily collect the sun produced by your Sunflowers, occasionally re-planting a Pumpkin or planting a Wall-nut or Tall-nut over the previous one. Upgrade your Kernel-pults to Cob Cannons when you have enough sun, use a corn cob missile to take out the remaining zombies when you have all five Cob Cannons, and then you are done.

Last Stand Strategy

Because 5000 sun is given at the start and only 3500 is needed to plant five Cob Cannons, all you really need to do is plant ten Kernel-pults and then upgrade them to Cob Cannons. You do not even have to start the Onslaught, so you can start a game, build the five Cob Cannons, then leave.

Video walkthrough

See also

V · T · E Achievements in Plants vs. Zombies
20 Below Zero** · Ask Me About Mustache Mode* · Book Learner** · Chill Out** · Close Shave · Crash of the Titan · Defcorn 5 · Disco is Undead · Down the Hole!** *** · Explodonator · Flower Power** · Home Lawn Security · Last Mown Standing** · Lawn Mower Man · Melon-y Lane · Monster Mash · Morticulturalist · Nobel Peas Prize · Nom Nom Nom · Peking Express · Penny Pincher · Popcorn Party · Pyromaniac · Second Life · Shopaholic · Shopping Spree · Soil Your Plants · SPUDOW! · Street Team · Sunny Days · The Complete Zombie · Thrilling the Zombies*** · Undead Space · Versus vs Versus
Area Specific
Day Good Morning
Night No Fungus Among Us · Photosensitive
Pool Don't Drink the Water** · Don't Pea in the Pool · Pool's Closed
Fog Blind Faith · Cryptozombologist · Nebulaphile · Zombologist
Roof Grounded · Unsiege Mentality**
Mode Specific
Mini-games Attention Deficit** · Beyond the Grave · Chilli Free** · Diamond Beghouler · Lucky Spin · No-Cob-No-Explode*** · Roll Some Heads · Shooting Star · Sproing! Sproing! · Sultan of Spin*** · Wall-Not Attack · ZFF's 4 Evr
Puzzle Mode Better Off Dead · China Shop · Gotcha!** · Hammer Time!** · I, Win** · Smashing! · Still Standing · The Stuff of Legends · Think Hard · Where the Sun Don't Shine · Sol Invictus**
Survival Mode Alive and Planting · Immortal* · Tough Beans
Zen Garden Enlightened** · Greenfingers** · Greenhouser** · Towering Wisdom
  • * means the achievement is PC-exclusive.
  • ** means the achievement is handheld-exclusive.
  • *** means the achievement no longer exists.