Water Korean hackberry regularly during its establishment period and during prolonged dry spells. Aim to keep the soil consistently moist but not waterlogged.

Reduce watering frequency as the tree matures, as it becomes more drought-tolerant once established. Check soil moisture by probing a few inches deep.

Prune Korean hackberry primarily to shape young trees, remove dead, damaged, or crossing branches, and improve structure. The best time for major pruning is during the dormant season, typically late winter.

Light thinning can be done in summer to improve air circulation and light penetration.

Korean hackberry can be propagated from seeds, which require a period of cold stratification to break dormancy. Alternatively, softwood or semi-hardwood cuttings can be taken in summer and rooted under mist.

Grafting is also a possibility for specific cultivars.

Young Korean hackberry trees grown in containers may require repotting every 2-3 years, typically in late winter or early spring before active growth begins. Choose a pot one size larger than the current one.

Ensure good drainage and use a well-draining potting mix.