Hmm, could be I guess as some of the taller ones are oveer 6' tall, but I think some of the shorter ones which are more sheltered are also breaking. I'll double check anyway and thanks for the tip.

Hi I noticed this weekend that some of my otherwise very healthy raspberry canes seem to be breaking off at the top of the canes (the part with all the flowers & young fruit!). The top 4-6 inches seem to start to wither & the stem then breaks about 4-6 inches down. Is it a pest doing the dam...