Remember if you are growing outdoors, if you have helicopters wherever you are to put the plants in pots and then burry the pots in the ground. In the air pots stick out like a sore thumb
Someone here should be able to recommend a good seed bank, Green Man runs a good site on seed company reviews,
http://www.seedbackupdate.com I think is the address. It doesnt look like much but he runs a good site.