How to prune marionberry

Late summer, immediately after the final harvest; tie in and tip new canes by autumn. Cut all spent floricanes to ground level. Thin primocanes to the 6–8 strongest and tie them to a 2-wire trellis (wires at 90 cm and 1.5 m). In late winter, optionally tip the retained canes back to 1.5–1.8 m to encourage lateral branching and more fruiting buds.

Annually. Marionberry (a trailing blackberry hybrid) fruits on floricanes and requires annual post-harvest pruning. Remove all canes that carried fruit, then train 6–8 strong new primocanes along the trellis. Without this cycle, the planting becomes a tangled, unproductive mass within two seasons.

Cut all spent floricanes to ground level. Thin primocanes to the 6–8 strongest and tie them to a 2-wire trellis (wires at 90 cm and 1.5 m). In late winter, optionally tip the retained canes back to 1.5–1.8 m to encourage lateral branching and more fruiting buds.