Have you seen these blue and purple berries in your neighborhood? Bad news: this is the HIGHLY INVASIVE Porcelain Berry, a plant that spreads rapidly by climbing over native vegetation, shading out native plants and young trees, and reducing biodiversity. Native to northeast Asia, it was introduced to the U.S. for its ornamental value but has become a severe ecological threat, especially along the East Coast, where it forms dense mats and can damage forests by blocking sunlight, girdling trees,