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.
Perennial Herbs. 1  Many of the plants found in the traditional-or modern-herb garden are also perennials-some are evergreen perennials, such as the Thymes and Sages. 2  Others happily partaking in the herbaceous habit of growth, and therefore dying down each winter-to re-appear the following year.