Blackberry blackberry Blackberry is a vigorous bramble producing sweet, dark berries on second-year canes (floricanes). Many modern cultivars are thornless and semi-erect, making training and harvest easier. In colder parts of Sweden choose very hardy cultivars and consider winter protection by bending and securing canes low. Plants spread via primocanes and can tip-root; use barriers or regular pruning to keep them contained. Good airflow and sun reduce disease pressure and improve sweetness. Growing conditions LightFull sun for best yield; tolerates light partial shade in warm sites. Soil typeMoist, fertile, well-drained loam enriched with organic matter; slightly acidic is ideal. Water requirementModerate to high during flowering and fruit filling; keep evenly moist but not waterlogged. Nutrient requirementModerate feeder; annual compost plus light nitrogen in spring and a balanced feed early summer. Back to plant list