Stage 4-1 is the first stage of the fog level.
- Torchwood (for killing fog)
- An instant (For Jacks)
- Fume-shrooms and/or Scaredy-shrooms
- Conehead Zombie
- Ducky Tuber variants
- Jack-in-the-box Zombie
As the name implies, fog levels contain fog. Fog obscures your vision so you can't see zombies coming. However, your plants will notify you. Plant Sun-shrooms in the first two columns and Puff-shrooms as needed. Sea-shrooms can also come in handy. Use Torchwood to clear the fog. When you hear the infamous Jack Jingle, use an instant as soon as you know where the Jack is. Over time, replace Puff-shrooms with Fume-shrooms and Scaredy-shrooms. At the end, you should be prepared for an upcoming invasion by implying a usual final defense force.
- Stage 4-2