Level 4-9 is the thirty-ninth level in Plants vs. Zombies, Plants vs. Zombies: Journey to the West, and Plants vs. Zombies: Great Wall Edition, and it is the eighth Fog level. It is a regular level. When this level is finished for the first time, the player obtains a note from the zombies.
- There are only four columns visible for the player at the start of the level. It can be hard for the player to determine which lane zombies are spawning on at the beginning of the level.
- Required plants:
- Plant Sun-shrooms and Puff-shrooms for an easy defense at first.
- Use the same strategy in Level 4-8, but use the Cattail to pop Balloon Zombies (if you bought it) instead of Cactus. Cattails are more efficient in Pool or Fog levels. Try to plant at least four Cattails in this level for it to be really easy.
- Use Planterns or Blovers (if you do not have Cattail, as stated before) if you want to see through the fog. Just remember that seeing through the fog is a luxury, as it is not required.