On 24/08/2013 23:09, Victoria Conlan wrote:
Roger Tonkin wrote:
Mainly because my autumn fruiting ones have spiny
stems, and the summer fruiting ones smooth stems.


That's interesting to know. I'd be interested to hear other people
agree that this is the case, cos I've not heard it before.

A lot of the newer varieties of summer fruiting raspberries are now
smooth stemmed as well