Do Purple People Eaters really exist?

Carnivorous behavior in plants is far more widespread than previously thought according to scientists at the Royal Botanic Gardens, Kew and the Natural History Museum, who believe that many commonly grown plants, such as petunias, could partially be carnivorous. The scientists published their premise in a review paper titled, “Murderous plants: Victorian Gothic, Darwin and modern insights into vegetable carnivory”, in the Botanical Journal of the Linnean Society (Vol. 161, Issue 4).
Several plant groups have been recognized as carnivorous plants, including sundews, Venus flytraps and pitcher plants. The Royal Botanic Gardens scientists view plants as being on a sliding scale between those that show no carnivorous characteristics and those that are real meat eaters such as Venus flytrap. Plants like petunias and potatoes have sticky hairs that trap insects, and some Silene species have the common name catchfly for the same reason.
“Many commonly grown plants may turn out to be cryptic carnivores, at least by absorbing through their roots the breakdown products of the animals that they ensnare,” said Mark Chase, keeper of the Jodrell Laboratory at the Royal Botanic Gardens, Kew. “We may be surrounded by many more murderous plants than we think.”