The Roof is the roof of your house. No plant can be planted directly onto the tiles, so you must first place flower pots.
Plants
| Plant | Cost | Effect | Unlocked |
| Flower Pot | 25 | Allows a plant to be planted | 5-1 |
| Kernel Pult | 25 | Fires corn (normal damage) and butter (double damage and immobilises zombies) | 5-1 |
| Coffee Bean | 25 | Wakes up sleeping mushrooms | 5-1 |
| Garlic | 25 | Diverts zombies to the lane above or below | 5-1 |
| Umbrella Leaf | 25 | Deflects Bungee Zombies and basketballs | 5-1 |
| Marigold | 25 | Drops silver and gold coins (the only money-making plant) | 5-1 |
| Melon Pult | 25 | Fires melons at half the peashooter's firing rate, and deals splash damage. | 5-1 |
