How to prune blackberry 'triple crown'

Post-harvest (late summer to autumn): remove fruited canes. Summer (June–July): tip new primocanes at 90–120 cm (3–4 ft) to encourage laterals. After harvest, cut all fruited floricanes (second-year, darker canes) at ground level and remove them. Train remaining first-year primocanes along wires. In early summer, pinch or cut the tips of new primocanes once they reach 90–120 cm to promote lateral branching, which will carry next year's fruit.

Twice yearly: post-harvest floricane removal and mid-summer primocane tipping. Triple Crown is a semi-erect, thornless blackberry that fruits on second-year canes (floricanes). After those canes fruit, cut them out at the base. First-year canes (primocanes) are retained and trained in for next year's crop. Tip primocanes in summer to encourage lateral fruiting shoots. Annual two-stage pruning (post-harvest removal plus summer tipping) is essential.

After harvest, cut all fruited floricanes (second-year, darker canes) at ground level and remove them. Train remaining first-year primocanes along wires. In early summer, pinch or cut the tips of new primocanes once they reach 90–120 cm to promote lateral branching, which will carry next year's fruit.