I, Zombie Too

I, Zombie Too is the second I, Zombie level.

Plants

 * Peashooter
 * Sunflower
 * Snow Pea
 * Spikeweed

Zombies

 * Zombie (50 Sun)
 * Screen Door Zombie (100 Sun)
 * Buckethead Zombie (125 Sun)

Strategy
As Screen Door Zombie's screen door is resistant to the Snow Pea's freezing effect, it's best to use them in the rows with Snow Peas, but be aware that Spikeweed can damage the Screen Door Zombie even if he has his screen door, so don't use him in the rows with multiple Spikeweeds because you would waste 100 Sun. There may be a row with two Snow Peas, but in these rows there are no Spikeweeds, so put a Screen Door Zombie in these rows.

Use Buckethead Zombies in the rows where there are multiple Spikeweeds, as normal Zombies and Screen Door Zombies wouldn't survive in that row. Remember that, and you are good to go.

The top row always has exactly two Spikeweeds, one Sunflower and one Peashooter. There is a chance that one of the other rows can have the Snow Pea with the other two Spikeweeds.