Posted: 28/05/2016 at 09:37
All autumn fruiting raspberry canes should be cut back to soil level in February......the reason being they fruit on canes produced on the current year's growth.
Summer fruiting raspberries produce fruit on growth produced in the previous year. So these should be pruned in autumn or after fruiting has finished.
Remove to ground level all canes that have fruited this year and choose & retain from the current year's (new) strong canes about 6in apart, to provide next year's fruit.....cut out remaining canes to ground level.