A perennial plant or perennial (Latin per, "through", annus, "year") is a plant that lives for more than two years. When used as a noun, this term applies specifically to herbaceous plants, even though woody plants like shrubs and trees are also perennial in their habit. Perennials, especially small flowering plants, grow and bloom over the spring and summer and then die back every autumn and winter, then return in the spring from their root-stock rather than seeding themselves as an annual pl… (More on Perennials)