Posted: 10/06/2014 at 12:55
The new canes will fruit in the autumn - they won't have flowers yet.
You have two options with pruning autumn-fruiting canes.
If you prune them as you do your summer-fruiting raspberries the older canes will fruit earlier and the new canes will fruit in the autumn, but the fruit size will be reduced.
I follow the second method and prune every cane of my autumn-fruiting raspberries down to ground level in the winter - usually Feb - they will then throw up lots of new canes in the spring which will produce large fruits in the autumn.
I hope that's helpful