How to prune polka raspberry

Late winter to early spring (February–March) before new growth begins. Cut every cane to ground level with sharp loppers. In spring, thin emerging canes to 6–8 of the strongest per stool, spaced evenly along the support wire, to improve light penetration and fruit size.

Annually, every late winter. Polka is a primocane (autumn-fruiting) raspberry — cut all canes to the ground each late winter/early spring. New canes grow, fruit in summer and autumn, then the cycle repeats. This annual cut-back is the defining care task; skip it and old canes crowd out the new productive ones.

Cut every cane to ground level with sharp loppers. In spring, thin emerging canes to 6–8 of the strongest per stool, spaced evenly along the support wire, to improve light penetration and fruit size.