I send the folks seed of medicinals to N4S.
I woulda ordered from Prairie Moon Nursery, but they don’t update their site, so as a result, they won’t take my order. Easy Living Wildflowers on the other hand do does and did.
The downside is their seeds aint the bulk order deal of Prairie Moon.
Unlike PITA woodland seed like bloodroot, goldenseal simply needs cold-stratification. It is about the equal of ginseng for needs.
.Ginseng’s best deal I have found is Johnny’s which sells by the ounce…
My nagging fear for golden seal seed was this would be a fragile seed like bloodroot. it (golden seal seed) is round black has a hard coat.
It looks to be (and all descriptions for it are) it should do well with cold stratification, and autumnal broadcast into shade parts of woodland.
I ordered sassafras and next years antonovka apple seed.
I am finally on the last lap of getting some rhododendron fastigiatum. I expect I will need to propagate this tiny azalea from, Whitney Gardens, and Rhododendron Species Botanical Garden.
Bloodroot grows all over the woods around here, can’t imagine a need to start it from seed! There’s a road I take to work with hundreds (thousands?) of them on the side of the road.
Ampersand;
1., Golden seal is a protected herb, or at least so I have been told. Inasmuch as it has a fair resale value, you may want to talk to your local state Dept. of Natural Resources before you harvest yourself into retirement. See ginseng.
2., I don’t walk all that well.
3., I have two largish campgrounds to re-seed with golden seal, that do not now have many indigenous surviving plants on them.
4., There are other understory plants I intend to return to wider distribution as well as golden seal. There is safety in redundancy.
5., Bloodroot has a moist seed that is much more fragile than many other woodland plants. Its (seed) needs not only a winters cold-stratification. It is very fragile to handle, making return more an issue of re-planting.
And is far far slower to restore-return. I’ll get dozens of specie restored before I get bloodroot, apios, or cypripedia returned to both sites.
Gimmee a hard-coated seed like ginseng or golden seal to toss around in the woods.
I set out apios this spring (2015). Its common name is ground-nut. I put out about a hundred of the little tubers in a swale at Stacked Stones. I haven’t gone to look to see how well they took (or did not).
It is another I’d be a whole lot happier if I could buy its seed, instead of planing out clones.
My pshent and sedan-chair are on back order, so it’ll be a while before I get to do a face-to-face with this important (food) plant,
Heirochloe odorata (sp?) sweet grass seed is secured. I bought a bunch of it, germination even with cold-stratification is iffy.
I probably shoulda Googled what the vine looks like before I went stumbling around in that swale with my tired old legs on search for apios. I looked first and went Googling after.
I’m pretty sure there are apios vines growing ‘down there’, but I didn’t see any bean pods. 
Maybe next year…