- For the international version of this level, see Wild West - Day 9.
- For the version of the level after the v1.8 update, see Wild West - Day 9 (Chinese version).
(After receiving the note)
Penny: This poster shows that the zombies are coming up with a plan to eat the brains.
Crazy Dave: Oh! My brain turns out to be so worthy.
Penny: Not necessarily. It says they don't want brains of crazy people up there.
- The player had to deal with the Poncho Zombie and the Zombie Bull. Poncho Zombie could be a big threat because of how much health it could have, and even worse, it is Level 2, so bringing Level 2 plants or bringing Acidic Citrus was highly recommended. The Zombie Bull could launch a Zombie Bull Rider deep into defenses. The player should have brought along plants that can take out crowds of zombies, as well as powerful plants. Bringing strong attack plants and to deal with the Zombie Bull was recommended.
- When the final wave is almost started, Prospector Zombies would appear in every lane, which could cause the player's minecart plants to be eaten. Bringing an ice attacking plant or a backward attacking plant was also recommended.
- Required plants:
- Twin Sunflower (or Sun-shroom)
- Bloomerang (or any other strong attack plant that you have)
- Potato Mine
- Chili Bean
- Snapdragon (or any other multi-row attacking plant that you have)
- Squash (recommended, especially when you don't have any Level 2 attack plants)
- Acidic Citrus (recommended)
- Bonk Choy or Split Pea (recommended)
- Cherry Bomb (recommended)
- Do what you need to do first. Remember to plant the Sunflowers at the fourth column. Kill the first zombies with Potato Mines.
- Plant Bloomerangs on the minecarts early on so you can deal damage in multiple rows.
- Plant Wall-nuts along the seventh row.
- Use Squashes to help you squash the Level 2 zombies.
- Move the minecarts. Plant Bonk Choys at the third column to deal with Prospector Zombies.
- Don't forget to utilize Plant Food.
- * A gate can be unlocked with a key after completing this level
^ Conjectural name