Devil's Snare

Devil's Snare is a magical plant. It attempts to strangle anyone it can reach. Struggling will make it kill you faster. Both fire and sunlight will kill it.

Harry Potter and Ron Weasley got caught in a Devil's Snare in Harry Potter and the Sorcerer's Stone. Hermione Granger saved them.

In Harry Potter and the Order of the Phoenix, a man is strangled by a Devil's Snare disguised as a house plant and given to him as a Christmas gift.