Note: My 55 mm lens is screwy, so you'll pardon me because the pics here were all taken with a cellphone camera, though it does have a Leica lens.
I encountered Little Bluestem again when I drove (then hiked) up Prospect Mountain, near Lake George in New York State. Colonies of this species were scattered on the summit of the mountain, as well as along the roadway that led up to the summit.
S. scoparium seems to thrive when there is lots of sunlight and bare rocky ground, and both are plentiful up where the air is fresh and the wind is sometimes cold. In this case, about 620 meters above sea level, well below the tree line, but sunny enough to make it very happy.
Up here the grass rose from the surrounding stone, their straight reddish forms quite arresting. One particularly large (and flowery) individual stood next to a boulder, the sinuous curves of part of Lake George glittering behind it.
I still remember seeing this species in June 2019 while hiking the Summit Trail in Jenny Jump Forest in NJ. I did not know the name of the grass then (how things have changed in such a short time!), but I still marveled at the sight of the reddish hued straight grass at the summit of Jenny Jump.
So the next time you hike up one of the mountains in the eastern part of the USA, keep a look out for one of these native beauties!