Keep the soil consistently moist, especially during the first few years. Water deeply when the top inch of soil feels dry. Avoid waterlogged conditions, which can lead to root rot.

Reduce watering slightly in cooler months but do not allow the soil to dry out completely.

Prune to shape the tree and remove dead, damaged, or crossing branches. The best time for structural pruning is late winter while the tree is dormant.

Minor pruning can be done after flowering to maintain shape and size, and to improve air circulation.

Katsura trees are typically propagated by grafting or from seed. Seeds require stratification. Semi-hardwood cuttings can be taken in summer.

Grafting is often preferred for cultivars to ensure desired characteristics are maintained.

Repot young trees every 2-3 years to refresh the soil and prevent root-bound conditions. Use a well-draining potting mix.

For mature trees, repotting is rarely necessary unless they are in containers, and should be done in early spring.