My rose of sharon isn't doing so well. In researching for a replacement I found a warning about certain breeds being invasive/reseeding themselves too freely. Other information taught the Azzurri Blue Satin and other 'Satin' varieties either don't seed or have fewer seeds. The Azzurri Blue Satin simply cannot be found in my area and is not available much to purchase on line - but I found seeds. I ordered them but now am concerned because how could a person have Azzuri blue seeds that will actually grow Azzuri blue? Unfortunately on these sites, reveiws can only be entered for limited time which is not enough for a purchaser to notify whether the seeds actually grew what they should. The seller also has available seeds for plants which I'm sure are not possible in nature. Now, if they do arrive, I'm skeptical I should even plant them. I ordered Azzuri Blue Satin and just "Blue Satin" seeds. Should I plant them? What's the chances they'll actually turn out to be the type I ordered?
I am in Michigan in a very rural area on clay soil.

I doubt, even if you found someone reputable selling seeds for 'Blue Satin' Rose of Sharon, you would get what you want. I doubt you can find someone with a decent reputation even selling seed. Even if this seed really is from 'Blue Satin', the seedlings will not look like their parents. They have to be grown from cuttings in order to look like the parent plant.

I did find a couple on-line places selling plants but, as you have a plant, you can start your own cuttings. Until you figure out why your Rose of Sharon is dying, I wouldn't plant another one though.