Spikeweed

Spikeweed is a passive attacking plant, dealing normal damage to any zombie that dares to tread on it.

Usage
Plant Spikeweed on any regular ground spot, and it will damage every zombie that pass over it, doing 5 attacks in the time it takes any normal speed zombie to pass over it. It will also pop the tires of the first Zomboni or Catapult Zombie that drives over it.

Note: Spikeweed cannot be planted on Lily Pads or in Flower Pots.

Suburban Almanac Entry
Spikeweed

Spikeweeds pop tires and hurt any zombies that step on them.

Damage: normal

Range: all zombies that walk over it

Special: can't be eaten by zombies

Hockey is Spikeweed's obsession. He's got box seat season tickets. He keeps close track of his favorite players. And he consistently cleans up in the office hockey pool. Just one problem: he's terrified of pucks.

Cost: 100

Recharge: fast

Standard Levels
Plant Spikeweed in front of Wall-nuts, Tall-nuts or Pumpkins. Most zombies cannot harm it, and will be continuously damaged as they try to eat the defensive wall. Spikeweed is especially important for levels with Zombonis, and placing the Spikeweed on the first row will prevent the Zomboni from laying any ice at all (preventing the appearance of the Zombie Bobsled Team. Note that Gargantuars can destroy Spikeweed the same as they can any other plant.

Vasebreaker: Hokey Pokey
Try to lay down either a row of three Spikeweeds or one Spikeweed in front of a Wall-nut to kill the zombies. Timing can be everything, so if you see a Wall-nut, go ahead and break a few vases on the right hand side to see if a Wall-nut will be needed there. If no zombies appear closer than the fourth row from the left, put the Wall-nut on a different row, and lay down Spikeweed instead. Buckethead Zombies are the exception, you can't kill them with just Spikeweed - make sure to have a Wall-nut or use a Squash to kill them.