Canadian Goldenrod, Solidago canadensis.
As its name suggests it is native to northeastern and north-central North America. It forms colonies of upright growing plants, with many small yellow flowers in a branching inflorescence held above the foliage. It is an invasive plant that was imported to be grown as an ornamental in flower gardens. It is highly popular with a wide range of pollinators. It requires control or it will dominate. WT
