September probably has the highest flower count here: if you were to count each individual aster, lobelia, etc.? Hundreds of thousands easily. Spring and fall are the two growing seasons for New England, summer is survival against the heat and winter is survival against the cold.
The white wood aster, by the way, (which is in this photo) actually is fragrant: a very subtle floral scent on a good dry day…at least when one is standing in a patch several hundred feet square!
Acair Fearann 
Beautiful. I do love those white wood asters and didn’t realize they have fragrance. I love your description that summer is simply survival against the heat and winter against the cold. It’s only spring and fall that are our growing seasons. Perfect description.
I didn’t realize they did either; it is so faint that you only pick it up when the stand is really big, in this case roughly 20 by 20 feet. I love them; but they are garden hogs, they spread by runners and can even hold their own against other aggressive groundcovers (even bishop’s weed!)