Hi Sandy,

I did a little search for you:
Some times seeds can take a very long time to germinate unfortunately there are different things you can try. using sandpaper to scarify the seed - warm moist stratification -
usually in a ziplock bag with moist not wet vermiculite or peat. More advanced is something called GA3 or smoke - not sure if it is a prarie species it may reguire a smoke treatment to trigger germination - try a warm period for 90 - 120 days of moist warm - then switch to the fridge around 40 F or 4 degrees Celcius (Canadian) for another 90 - 120 days . A seed is like a little embyro sometimes they need to continue developing even though they can be picked and appear to be ripe - the warm moist period helps do this without the seed drying out - try the sandpapering if the seed is large enough before the warm period - this will allow the water to do what is called imbibe (penetrate) the seed helping the seed to germinate.

Deni Bown in her book "Encyclopedia of Herbs & their Uses" (Catalogue #B2730) recommends green wood cuttings with a heel taken in late spring or by division in spring or autumn. The plant is also grown from seeds, but you will find that cuttings are easier because the plant only sporadically sets seeds and the seeds are slow to germinate and develop.

I'd be interested in trying some of these seeds

Cheers

Jeff

Thanks Jeff,
I've already given all the seed away. The seed are very small. With seed that small I don't cover them, just sprinkle them on top of the potting oil and cover the container to keep it moist. It usually works but haven't had any luck with these.
The cuttings are gone also. We had a wind of about 60 miles an hour the day after I had put them on my front porch. Lost quite a few of my plants in small pots. A tornado did quite a bit of damage to my neighbors place about a half mile away.
When it blooms again I'll save the seed and your more than welcome to try your luck with them.

Thanks again,
Sandy