We have a chunk of our yard (about 30x60') dedicated to tall prairie grass! I planted it a few years ago not thinking about how prairies aren't terribly wildflower-dense.

It was disappointing at first for not being so vibrant, but it's where our dragonflies like to chill so now it's the area I'll protect first. I've even considered watering it a few times when it was very dry, despite drought resistance being part of the point.