Venomous Tentacula
The clue is in the name – this isn’t the kind of plant you’d give your aunt for her conservatory. How many plants to do you know that actually go through a teething phase? Luckily during Herbology lessons it is deemed acceptable to swear loudly if attacked by one of these spiky, dark red plants. And in the right hands they’re the perfect weapons for tackling a Death Eater.
(Source: J.K. Rowling 😉)