" ... be careful of the Venemous Tentacula, it's teething."
-- Professor Sprout in Greenhouse Three (CS6)
The Venomous Tentacula is a spiky magical plant with teeth. The vines of this scary plant reach out toward people when it is teething (CS6). The bite of the Venomous Tentacula can be fatal. Minerva McGonagall’s husband Elphinstone Urquart died of such a bite three years after they were married (Pm).
- The twins bought seeds of this plant from Mundungus Fletcher for use in their Wheezes (OP9).
- A wizard named Derwent Shrimpling became famous for Eating a Venomous Tentacula, but his skin remains purple to this day (FW, JKR).
- One of the plants used by Professor Sprout against the Death Eaters during the Battle of Hogwarts (DH30)
"tentacula" probably refers to the reaching tentacles of the plant