Two (three after first time)
Level 2-2 is the twelfth level in , Plants vs. Zombies , and Plants vs. Zombies: Journey to the West , and it is the second Plants vs. Zombies: Great Wall Edition Night level. It is a regular level. When this level is finished for the first time, the player obtains the Fume-shroom.
This level consists of two flags. There is a combination of Buckethead Zombies and Conehead Zombies, the biggest zombie threats so far. This includes the graves that can spawn zombies at the final wave.
Sun-shrooms produce 15 sun at first and then 25 after a while. To make up for this, use Puff-shrooms to attack zombies at the beginning to save sun.
Use Wall-nuts for defense.
When you have enough sun, start planting Peashooters and Repeaters to attack at long distances, especially for defeating the Buckethead Zombies.
If you have enough sun, use a Cherry Bomb for emergencies.
Plants vs. Zombies Wiki
for Level 2-2.
Plants Vs. Zombies HD - Level 2-2
Plants vs. Zombies - Night 2-2