Digitalis

A fearsome flower that preys on humans. It was once grown for its rare, vibrant colors. But some people became lazy in tending to them, not providing enough nourishment, which turned them into vicious monsters. This was more than what many people could handle, so they threw them out into the wild. Maybe they harbor a strong resentment towards humans, as they will leave animals alone, whereas the moment they spot a human, they will aggressively extend their vines to capture the person.