Hello Kim, I work with people who work on prairie restoration, but basically all they do is remove trees and shrubs, remove invasives and unwanted non native species.
They also scatter seeds of native plants. Burning gets rid of a lot of brush and improves the soil, but it can be very dangerous if done without the proper precautions and I don't recommend it.
Here is a link to a site here in Arlington, Texas.
http://www.theprairie.org/?pag...
This is a virgin prairie that is being supported by the city, maybe you can contact them and they might be able to give you some advice.
Good luck with your prairie, you are doing a good thing.
