All your brainz r belong to us

The ninth I, Zombie level.

Plants:

 * 4 Potato mines and 2 sunflowers
 * Threepeater, Snow Pea, Split pea, 2 sunflowers, Tall-nut
 * 3 Chompers, 1 squash, 2 sunflowers
 * 3 peashooters, 2 sunflowers, Torchwood
 * Starfruit, Scaredy-shroom, Split Pea, Magnet-shroom, Fume-shroom, Sunflower

Zombies

 * Imp
 * Conehead Zombie
 * Pole-vaulting Zombie
 * Buckethead Zombie
 * Bungee Zombie
 * Digger Zombie
 * Ladder Zombie
 * Football Zombie

Strategy
Bungee two sunflowers, then the magnet-shroom. Bungee another sunflower. Put a ladder Zombie in the row with the torchwood; the flame doesn't affect it. Ladder the tall-nut, then use another ladder to combat the Snow pea in the same row. Take a football zombie to the fifth row, because of the heavy offense. Use a bunch of imps on the first and third rows. Done.

Trivia

 * The name of this I, Zombie is a reference to the Internet meme "All your base are belong to us". The same thing appears in Garden Warfare as an easter egg.