North American Fruit Explorers mailing list at ibiblio

["Rodney" <reveland@collinscom.net>]

How does Blackberry breeding work? Is it like apples and potatoes where you 
have no idea what the seeds will produce without actually planting some and 
waiting for a crop or is it more definite than that? In other words can your 
Zone 3 be crossed with other varieties to get the best of both without the 
outcome being a total guess? I think there is a market for a zone 3 
blackberry, but probably an even bigger market for a zone 3 BB crossed with 
something like a boysenberry, or better yet a boysenberry created with your 
zone 3 BB as a parent.  Here is a Wikipedia entry that says boysenberry is a 
cross of BB, Raspberry and Logan berry. 
http://en.wikipedia.org/wiki/Boysenberry  If you can get a zone 4a 
boysenberry lots of people will be eternally grateful.

Rodney in Wy