Invasive plants are a special breed. It’s not that they’re aggressive, crowding out their neighbors; nor are they weeds, which are just plants that are growing in the wrong place. Invasive plants are non-natives that grow so quickly that they take over entire habitats. “Hard-core gardeners know about these plants, but many people introduce them by accident,” says gardening expert Melinda Myers. Afraid of ruining your local habitat? Beware of these 10 plants you probably didn’t know are invasive.