Is it possible to train them horizontally along washing lines once they get to 10 ft, because then a pulley at the end of each would again make picking easier. I know other climbers manage this, but I don't know if they would produce as much crop like this. Blackberries actually produce more when the runners go horizontal.
My seeds are up but are mainly an experiment as they were cheap. About 20 came up from 50 seeds for 99p. If they survive up here then I will buy named varieties later on, and these can go into the wild.