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.
Definition of Perennial Plants. Simply put, unlike annuals or biennials, perennials are plants that live year after year. Some perennials, such as trees and shrubs, have significant life spans.Others, like many flowering perennials, may need to be replaced every three or more years.efinition of Perennial Plants. Simply put, unlike annuals or biennials, perennials are plants that live year after year. Some perennials, such as trees and shrubs, have significant life spans.