There are, but success is going to be meager. When we plant "prairies", the quotation marks are placed there because while the species of plants involved are indeed "native" to this state, this plant community type is not what was here originally, we go through a process which is far more involved. So, if we were going to establish a patch of such plants, we'd first use glyphosate (Roundup) herbicide, not once but two or three times during the preceding growing season to kill off as much of the weedy junk as possible. Then, in late fall, we would do a dormant seeding, one in which the intent is for the seeds NOT to sprout this year, but next spring. This methodology most closely mimics the way nature does it, with seeds tending to be formed late in the growing season, falling to earth, and remaining unsprouted until freeze/thaw action has settle them into the ground just so. That happens in the following spring. So that's the system. You could try flinging some seed around but even following that burn, there are just so many weed seeds laying there also ready to go, that if you at all can follow the pattern I mention, success is far more likely. And in truth, most of those that you can seed right now are prairie grasses, not forbs (flowers).

Thank you for the info.

Lucy, don't necessarily give up because of my words. You might still succeed with something or other. Very basically though, it's seed to soil contact that is required for germination. That can be hard to come by in many cases. BTW, do you happen to know what species of goldenrod you had there? Be aware-the burn may not necessarily have killed the roots of that and other plants.

A quick burn will not generally kill the roots of forbs and grasses. Controlled burns are a common in grass and rangeland management. Historically, the majority of the great plains were on a 2-12 year burn cycle

Unfortunately burning has not been shown to be an effective strategy for weed control in and of itself, and it is possible that invasive/noxious weeds may colonize the burn scar and become even more esablished in the area than they were previously if not kept a close eye on.

So if I were you, my first priority would be to watch the area for any weeds that will appear in the area otherwise, your going to be fighting an uphill battle trying to get the plants you want established and simultaneously trying to get rid of the weeds.

Then, as Tom said, if you are going to broadcast seed, do it in the fall or on a nice day in the winter. Many warm season grasses you can sow in spring or summer and they will sprout no problem, I have blue and sideoats grama, switchgrass, big and little bluestem and they all sprout without any special assistance. But take care to try and time it with seasonal rains or they will sit dormant until moisture arrives, and give weeds a chance to take hold in the meantime.

Another good technique to use if you have the ability is called imprinting. Prior to seeding, running a "sheepsfoot" drum over the soil to create divots that will catch and hold water better than flat ground.