Two that come to mind that are in Ontario and do ship are:
Chapmans iris in Guelph and Trails End. Marg

And they both are the best! :)

Ginny

Thanks for the info. I checked out the websites and I'm overwheelmed by choice. I finally decided on Tour de France or Spiced Custard. Not what I originally intended, I was looking for an all yellow iris but these varieties looked so interesting. I'm going to give them a try.

Another one you might want to look at is http://tesligtegardens.ca/irises_a-b.html. They have some nice yellows on there. Marg