Porcupine Tomato Plant

The porcupine tomato hails from Madagascar, the island nation that brought us the Hellbeast lemur and Dracula ants.

Aside from being sharp and poisonous, the porcupine tomato is a potentially invasive species, since it is difficult to kill, even in drought. Among the features you don't want in a poisonous dagger monster, "hard to kill" has to be way up there.

Did we mention that it spreads quickly, and can reach 8 feet tall by 8 feet wide in a relatively short amount of time? What we're saying is that you should be careful stepping out your front door in the morning, because you never know when a toxic, razor-filled hedge may have sprung up in the middle of the night.