Licorice Plant Helichrysum petiolare (White Licorice Variety) Melissa officinalis (lemon balm): Go Botany The Poison Diaries Lily of the Valley, all parts of this plant are Ella Planters Bungalow Ella, Sri Lanka Prickly pear cactus, its edible parts, & more Dunbar Spring Neighborhood Foresters Not all alien plant species become invasive, but some can significantly disrupt ecosystems. According to the IUCN, an invasive alien species (IAS) is one that establishes itself outside its natural range and