It shows on the database that 16 members have Indian Sky, but it appears that many of them have not posted anything for a few years. But
@Joy,
@bluegrassmom,
@GaNinFl, and
@beckygardener have it on their plant list, so maybe some of them will respond about how it has performed for them.
I didn't realize that Indian Sky was only 22 inches tall. I wonder if it gets taller than that.