How long should the canes be?
by Diana Fox
(Brownsville, IN USA)
Doug says that here is the difference in both variety and in climate. In a zone 4, most canes aren't going to get above a 5-6 foot range. In a warmer climate, they can downright Jack-Beanstalk size. :-)
In my world, if I can reach the berry - this is a good thing. In warmer climates with taller canes, I'd probably be tipping off the second year canes to a height I could reach.
And I'd be running another support system (here in the north, we don't need a support system) that I'll diagram out and put on the pruning page shortly.