Tānekaha prefers consistently moist soil, especially when young. Water deeply during dry periods to maintain even moisture, avoiding waterlogged conditions.

Allow the top few centimeters of soil to dry slightly between waterings for established plants.

Pruning is generally minimal and best done to remove dead, damaged, or crossing branches. If shaping is desired, do so during late winter or early spring before new growth begins.

Avoid heavy pruning, as it can stress the tree.

Propagation is typically done from seed, which requires scarification and stratification. Cuttings can be taken from semi-hardwood in summer, but success rates can be variable.

Grafting is also an option for desirable cultivars.

Young plants may require repotting every 2-3 years as they outgrow their containers. Choose a pot that is slightly larger than the current one. Ensure good drainage.

Established trees are best left undisturbed in the ground.