Polka Thorn-less Raspberry Shrub

Polka Raspberry / Rubus. Polka Raspberry is a virtually thornless raspberry variety with a vigorous, upright growth habit. It is a self pollinating raspberry, producing abundant fruit year after year once established. Keep raspberry bushes evenly watered during the summer. Check regularly and water whenever the top inch of soil is dry. Drip irrigation or a soaker hose system is ideal for consistent moisture. Do not water during the winter, though, as that could cause the roots to rot.