Solidago mollis Bartl.
Family: Asteraceae
soft goldenrod, velvety goldenrod
[Solidago mollis var. mollis Bartl.]
Solidago mollis image
from USDA Plants website  
Etymology: Solidago: from Latin solido, meaning "to make whole or heal" and a reference to the supposed, medicinal qualities of these plants
Plants: perennial forb
Conservation Status: Introduced - adventive