Botanists use the word "herb" to mean those plants that only make the soft foliage that is devoid of the materials that characterize woody plant parts. Herbaceous plants, which include annuals, biennials, bulbs, vegetables and perennials, come in infinite varieties. Dill, right, native hibiscus, bottom left, and cardoon, bottom right, are examples of a biennial, perennial, and perennial vegetable, respectively, and could be found mixed haphazardly in what were known as kitchen gardens.