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 Sage. Hybrid perennial sage, a relative of the herb garden favorite, combines 18-inch spikes of blue, purple, or white perennial flowers with attractive gray-green foliage. Plant sage in the front or middle of the border in a sunny spot. The variety shown here, 'May Night', is both cold-hardy and showy.hese perennial flowers are valued in the garden for its ferny, gray-green or dark green, spicy-scented foliage and showy, flat-topped clusters of flowers in pink, red, white, or yellow appearing from late spring to early fall. 1  Learn more about yarrow.