Hi rayway, I noticed you are in Winnipeg? What's growth hardiness zone? I have a brother in Winnipeg
I have elderberries up here in Renfrew, ON and they are super hardy, they can be grown in zones down to 3a I believe if not colder... There are a number of other fruit trees and shrubs for cold hardiness that I've been planting from this site:
www.treetime.ca a lot of their stuff was developed in Saskatchewan and can be grown to zone 2a! The strain of elderberries I'm growing are sumbucus canadensis or black elderberry and are also native to Ontario... Perhaps you might have a supplier in MB already?