Native grasses

We went out today and collected some seed from a field of native grasses. We think they are Indian Grass , Little Bluestem , and Big Bluestem .

It's been really dry around here for weeks, so I assume we can just put the seed in canning jars and it should keep until spring.

I want to at least make a bunch of round areas in the yard to plant these grasses, and down at the bottom (but can I roundup the current grass? There are fruit trees to consider). I might try to plant the old garden area in native grass, as well.

I'd really like to get some of that perennial corn, too.