Guess it's time to bump this down. If anyone thinks of anything, PLEASE let me know!!!

z. piperitum plants available at the link below but are unsexed and expensive.
a search listed several sources for seeds and plants but all in the united kingdom and i guess that is problematic for international ordering.
z. simulans seeds available here:
http://www.plantexplorers.com/vandusen/product_info.php/products_id/469 in canada, perhaps easier on the trade route?

Here is a link that might be useful: Bay Flora website

Garden centers I've been to here have had at least one kind in recent years, maybe two - meaning there was some wholesale production going on.

Have you read this? Labeling issues are not peculiar to any one source. You just have to learn to recognize the different kinds involved so you know when you are encountering the ones you want.

Here is a link that might be useful: Zanthoxylum trees and shrubs in Seattle

Jeff, thank you VERY much for that reference. It may actually be worth pulling in some plants from Bay Flora.

Bboy, I know what you mean, but I'm not good enough to ID them from another state (read humorously, not sarcastically). I agree that there has to be sources out there, but they sure have escaped me so far.

I have read Jacobson's site before. I thought about emailing him, but after reading some things on his site, I figured he'd want to charge me a consulting fee or something.
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I sure hope GardenWeb gets straightened out. It took me about 20 minutes just to get this page loaded tonight (that's AFTER I went through their work-around to log on).

Yes, you'd have to view the stock in person to avoid being sent one you did not want. If that is not possible then you are left with ordering what you find offered and being able to assess what you got afterward. Knowing what to look for still saves you growing the wrong one(s) for years, by mistake.

Arthur responds to all e-mails presented with normal courtesy ("Dear" etc.).

Dear Friends,

I just found Zanthoxylum simulans and cultivated Polygonum hydropiper and i just decided that i cannot live without. the problem is i live in romania and is somehow hard to aqquire propper seeds.

Do you happen to know any european vendor?

How can i be sure of the quality of seeds if i try from e-bay?

If i grow Zanthoxylum simulans from seeds, there is any chance to know which is male/ female plant, if Z. stimulans at all?

yours trully,
mira

Mira,

You may want to start your own thread so that you get the email replies, and so I don't. Also, your question might receive more proper attention since it would be on-topic in its own thread. But, here are a few European nurseries that report having stock of the plants you mentioned:

Agroforestry Research Trust - has Z simulans
Binny Plants - has Z simulans
Burncoose Nurseries - has both

The only way to have any confidence in an Ebay seller is if they have a high ranking. Even then you're taking your chances, since the replies would have been give before they buyers had a chance to grow the plants/seeds. Buying plants and seeds on Ebay probably is much more risky than buying from a reputable nursery.

No (reasonable) way to know sex of seedlings until the plants mature.

In addition to the above sources, Richters Herbs (in Canada) sells Polygonum hydropiper seed and appears to be willing to ship seeds overseas.

BTW, I have no personal experience from ANY of the sources I'm listing for you, so you'll have to evaluate them for yourself. I have no opinion on their quality or service.

Might be something for someone in Romania here. I would also try the same site for the other plant.

Here is a link that might be useful: Search results > RHS Plant Finder / RHS Gardening