Cadaver Campsite

Cadaver Campsite is the Challenge Zone for the Campsite stage in Plants vs. Zombies: The Final Showdown. And this is all the info for that Challenge Zone!

Plants
Since almost every plant in the game can be unlocked for the Challenge Zones, I'll simply list the plants you get to start with and the plants you can't ever get.

Starting Plants

 * Peashooter
 * Sunflower
 * Wall-nut

Plants you can't get

 * Sea-shroom
 * Lily Pad
 * Plantern
 * Blover
 * Volt-shroom
 * Flower Pot
 * EMPeashooter
 * Flowervator
 * Umbrella Leaf
 * Gooseberry
 * Grave Buster

Zombies
A list of all zombies that can appear in this Challenge Zone.
 * Browncoat Zombie
 * Conehead Zombie
 * Flag Zombie
 * Buckethead Zombie
 * Pole Vaulting Zombie
 * Jack-in-the-Box Zombie
 * Diamondhead Zombie
 * Billboard Zombies
 * Disco Zombie
 * Backup Dancer
 * Football Zombie
 * Zombully

Cards
When picking the cards before a level, the following can appear instead of plant cards:

Sun card: 200 extra starting Sun.

Lawnmower card: Restore a lost Lawnmower.

Plant Food card: 1 extra Plant Food.

Clock card: 10 more seconds before the first zombie appears.

Net card: Gives you a "safety net", if a zombie reaches the first column, it instantly dies, regardless of current health. Only works once per level though.

Campfire Info
Info about how many Campfires can appear and where they can appear in each level.

Levels 1-3: Three to five Campfires, columns 7-9, one-per-row max.

Levels 4-10: Four to five Campfires, columns 6-9, one-per-row max.

Levels 11-20: Five Campfires, columns 5-8, one-per-row max.

Levels 21-50: Five to ten Campfires, columns 4-7, two-per-row max.

Levels 51+: Five to ten Campfires, columns 3-6, two-per-row max.

Zombie Info
Info about possible selections of Zombies in certain levels.

Level 1: Browncoat Zombie, Conehead Zombie, Flag Zombie, Buckethead Zombie.

Levels 2-3: Browncoat Zombie, Conehead Zombie, Flag Zombie, one other Zombie.

Levels 4-10: Browncoat Zombie, Conehead Zombie, Flag Zombie, two other Zombies.

Levels 11-20: Browncoat Zombie, Conehead Zombie, Flag Zombie, four other Zombies.

Levels 21-50: Browncoat Zombie, Conehead Zombie, Flag Zombie, six other Zombies.

Levels 51+: Browncoat Zombie, Conehead Zombie, Flag Zombie, Buckethead Zombie, Diamondhead Zombie, five other Zombies.

Chance of being picked
The odds of each Zombie being chosen as one of the "other" Zombies.

Levels 2-50
Buckethead Zombie: 25%.

Pole Vaulting Zombie: 10%.

Jack-in-the-Box Zombie: 5%.

Diamondhead Zombie: 10%.

Billboard Zombies: 20%.

Disco Zombie: 10%.

Football Zombie: 10%.

Zombully: 10%.

Levels 51+
Pole Vaulting Zombie: 20%.

Jack-in-the-Box Zombie: 10%.

Billboard Zombies: 25%.

Disco Zombie: 15%.

Football Zombie: 15%.

Zombully: 15%.