I came across this little gem at the garden center the other day. It's a new introduction this year. The goldenrod is one of my favorites and I don't have one currently in my garden. 'Little Lemon ' is a dwarf, is described as a vigorous plant with lemony yellow clouds that appear in August. If sheared back when they decline, a second bloom period may appear.
I know that it's so common and can be seen growing almost everywhere but it's cheerful yellow blooms brighten up the garden for a very long time.