Black Poplars prefer consistently moist soil, especially when young. Water deeply and regularly during dry periods to encourage robust growth. Avoid waterlogged conditions, as this can lead to root rot.

Mature trees are more drought-tolerant but benefit from supplemental watering during prolonged dry spells.

Prune to remove dead, damaged, or crossing branches, typically during late winter when the tree is dormant. Young trees can be trained to a desired shape.

Avoid heavy pruning, as Black Poplars can bleed sap if cut excessively, especially in spring.

Black Poplars are easily propagated from hardwood cuttings taken in late winter.

Select healthy, disease-free branches, cut them into sections about 15-30 cm long, and plant them directly into moist soil or a suitable potting mix. Rooting is generally successful.

Repotting is not typically a concern for Black Poplars as they are large trees usually planted in the ground. If grown in containers for a temporary period, repot into a larger container with fresh, well-draining soil when the root system becomes constricted, usually every 2-3 years.