The carnivorous plants grew in the back garden of a mysterious gardener.
They come in many kinds of giant plants like flowers, fly traps and trees with faces.
They enjoy having the meat of their prey, but despise fruit, as fruit makes them sick.
The Richie Rich/Scooby-Doo Show
One of them tasted Scooby and tried to eat him, only for him to notice and run away. Soon enough, the Gardener send his entire garden of plants after them.
Some fruit trees dropped fruit on them, and Scooby made an ice cream sundae. Unfortunately, he and Shaggy get fat, and unable to move, making them easy prey for the plants. Before they could be eaten, Scrappy swung in and saved them. He then proceeds to throw fruit to the plants, and they get sick, giving the trio the chance to escape. (Hothouse Scooby)