Urtica dioica....common nettle, it is one of the worlds super weeds, it has followed man round the planet...i know that it is grown as a commercial crop in some regions of the states.
it is quite possible that you have passed them bye...but once experienced..never forgotten..

..someone with horticultural knowledge should be able to point you in the direction of them...they are very good used in soap, hair shampoo and makes a very good soup...ask around i'm sure someone will help..good luck anyway.