You begin the Day segment of the campaign with only one plant, and gain one new plant for each level except 1-5, making eight plants in total.
| Plant | Sun Cost | Effect | Unlocked | |
| Peashooter | 25 | Shoots peas | 1-1 | |
| Sunflower | 25 | Produces 25 sun every 5 seconds | 1-1 | |
| Cherry Bomb | 25 | Explodes zombies in a 3x3 area | 1-1 | |
| Wall-Nut | 25 | Acts as a shield | 1-1 | |
| Potato Mine | 25 | Explodes zombies above it (after arming for 1 seconds) | 1-1 | |
| Snow Pea | 25 | Shoots frozen peas which also slow down enemies | 1-1 | |
| Chomper | 25 | Eats zombies in front of it | 1-1 | |
| Repeater | 25 | Fires two peas at a time | 1-1 | |
