moyerles Hatfield

Brenda,

Those thorns on the berries never really bothered me, but I may have a different variety than you do AND I've never had enough production here to warrant doing anything with them except eating them fresh.  However, I've heard that to deal with the thorns all you have to do is freeze them on a cookie sheet and, once they're frozen, roll them around in a towel and those thorns snap right off.  I haven't tried that myself, though....

--Leslie

http://davesgarden.com/products/ps/

Dave's Garden has a feature like that. I also use their "Garden Watchdog" feature a LOT--it allows customers to rate businesses and give reviews. 

http://bazaar.gardenweb.com/directory/

Garden Web has a listing by broader category (ex: bamboo).  They also have forums on specific topics where other knowledgeable gardeners could probably assist you.  (Ex: check the "edible landscaping" forum for help on locating edible plants; the "fig" forum for help on locating a specific variety of fig.)

But the most "niche" kinds of plants are still going to be more difficult to find.