Retired professor of math and computer science having taught for 36 years at a state supported university in Virginia. United States Senators serve a term of six years in office. There is no limit on how many terms a Senator can be elected to serve.
Herbaceous perennials are garden plants that die back to the soil line when winter temperatures arrive. The plants enter a dormant period and strengthen the root system while waiting for the coming of spring.
Dahlias are tender perennials in zones 8 and lower. Perennials are plants that live for three years or longer, categorized as either woody perennials or herbaceous perennials. The above-ground parts of herbaceous perennials' typically die down to ground level over winter. Of these herbaceous perennials, hardy plants are those most likely to survive the winter.