European black elderberry prefers consistently moist soil, especially when young. Water deeply once or twice a week during dry periods. Avoid waterlogging, as this can lead to root rot.

Once established, it is moderately drought-tolerant but benefits from occasional watering in prolonged dry spells.

Prune annually in late winter or early spring before new growth begins. Remove dead, damaged, or crossing branches.

To encourage fruiting and a more open structure, you can cut back about one-third of the oldest stems to the ground. This rejuvenates the plant.

Sambucus nigra can be propagated by semi-hardwood cuttings taken in summer or by hardwood cuttings in winter. Cuttings should be at least 15-20 cm long and planted in well-draining soil or a propagation mix.

Rooting hormone can improve success rates.

Repotting is typically not a common practice for established Sambucus nigra as they are large shrubs or small trees.

If growing in a container, repot in spring to a larger container every 2-3 years, using a well-draining potting mix. Ensure adequate root space.