I think It's to late in the season now for you, both in regards to selection as much will be sold out and also it may be a bit late to get the plants time to get established before winter. However Jean did post a few sources
Although I don't think Ashwood nurseries exports to the USA, the other seems like viable options?
I'm afraid that the selection may be better this side of the pond, particulary in the UK and also the Netherlands. Not sure, though? Importing to the USA is however a rather expensive endeavour and there is lots of paper work needed as well, both for the sending nursery and also you would need to contact customs to make sure the seeds/plants will be let into the USA and to get any additional papers you may need.
Rare plants will export to the USA and has some nice deeper pinks, but it costs an arm and a leg
http://www.rareplants.co.uk/?s... .
If you are prepared to sow some seeds yourself, you can get a truly fantastic selection here:
http://home.kpn.nl/j.bravenboe... The costs involved are a bit more manageable, but then comes the trouble of getting the small tubers through their first winters.
In any case those links should give you an idea of what is available, so you at least would know what to look for. Seed exchanges could be a good source of seeds as well for these as they are a bit of a specialist item.
