Actually, I've cheated you somewhat. One of the species I want to talk about is done blooming. It was the second goldenrod species to bloom in our yard this year, elm-leaved goldenrod (Solidago ulmifolia).
I'd guesstimate that this species stayed in bloom for about a month, beginning in mid August and finishing about a week ago. One nice thing about elm-leaved goldenrod is that it prefers at least part shade, making it a nice pop of color in sometimes dark areas of the garden. It's also very hardy and, so far at least, has had very good manners. I've not noticed any unwanted "children" springing up, nor have I seen evidence of the vigorous suckering that can make some goldenrods seem rather thuggish. I'd highly recommend planting this goldenrod, too.
The next goldenrod coming into bloom was in the natural areas. Missouri goldenrod, Solidago missouriensis, is a rather short goldenrod. It's one of the first to bloom in the prairie. While it will form colonies, they are quite open and not intrusive at all. My only beef with this guy is that its bloom season is too short for me, lasting just a couple weeks.
Due to Blogspot's dislike of my photo file sizes, I'll continue this subject in another post....