Since that last link wouldn't post, I will give you guys this one instead for Asclepias with the added note that they take paypal. I think they have between 20 to 25 varieties available.

Sharing Sheila

Here is a link that might be useful: Asclepias

Try these guys, the selection is unsurpassed Use your credit card and there are no hassles with the exchange rates.

Here is a link that might be useful: chilterns

Skatayama: Your post brigns this site to mind.

Here is a link that might be useful: Secret Seeds

I don't know if its "secret" but hardy plants / specialty perennials has had almost every seed (and a few plants) I have ever (even rare) wanted..... :)

Here is a link that might be useful: Hardy plants / specialty perennials

If this one's a Secret... I'll be glad to let it out...LOL
The only problem is you get soooooo many seeds...
You would have to find someone to share with.... not hard here.. hehehe

Here is a link that might be useful: Seeds from ITALY

I had given up hope that anyone was going to post. I love Chiltern's and Secret Seeds - if anyone loves codonopsis check them out.
Flowersandthings link was a new one to me! Definitely got a spend some time there.
I had checked out Hazel Nut's link before but keep forgetting to bookmark when browsing. Not only that, for some reason my bookmarks delete themselves. Truly annoying. I had saved some really unique sites like the place that sells the hardwood laced with truffle spores.
I'll post another link this weekend when I get a chance to browse GW and see what plant I'm obsessing about this week.

Sheila

I like Chiltern Seeds, JJA Seeds, Rocky Mountain Rare Plants, Alplains, Plants of the Southwest, Theodore Payne Foundation, Stokes Seeds, Select Seeds, Seed Savers' Exchange, Seeds of Change, Lonnie's Bulk Seeds and the RHS annual seed distribution scheme. I plan to try Silverhill Seeds this year, and I have lots of wonderful seed to fool with from Phedar Nursery (peonies and hellebores). You can find links to all except Phedar Nursery (phedar.com) through gardenwatchdog.com, and ratings for all but Phedar there.

An excellent source for species seed especially is the plant society for whatever plant you feel most passionate about. Fern societies have spore stores. (love that!) The Gesneriad Society (AGGS) has an amazing list, including some hybried seeds donated by hybridizers. Lots of others--

ljrmiller, I love Phedar's. For those of you who are into peonies and hellebores, that site is run by a passionate plant explorer so don't expect kid glove treatment. On the other hand, if you are likewise a gung-ho love the plant fanatic you will fit right in with the Phedar philosophy and won't care about instant gratification. Which in this case, is a good thing.

ljrmiller just took my next site to post as well as several others so now I will have to go back and think about which plants have me excited about gardening and where to get them.

Sheila

Hazelnut I know what you mean about seeds of Italy! I've got enough veggies from them (including mountains of lettuce.... which I could probably use and mountains of anans melon.... which I'll have to find something to do with!) to last for a long time! Definitely will have to share! :)

One of my favorites is Sunrise Seeds.

Here is a link that might be useful: Sunrise Seeds

And don't forget this source. Just google "Derry Watkins Special Plants"---she has seed to sell.