Water Psidium friedrichsthalianum regularly to keep the soil consistently moist, especially during dry periods and when the plant is establishing. Avoid waterlogging, as this can lead to root rot.

Reduce watering slightly during cooler, dormant periods, allowing the top inch of soil to dry out between waterings.

Prune Psidium friedrichsthalianum to shape the tree, remove dead or diseased branches, and improve air circulation. Pruning can also encourage fruit production.

Heavy pruning is best done after fruiting or in late winter before new growth begins. Maintain an open canopy for better light penetration.

Psidium friedrichsthalianum can be propagated from seeds, which usually require scarification or stratification for germination.

It can also be propagated vegetatively through cuttings, which often provide faster results and maintain desirable parent plant traits. Grafting is another effective method.

Repot young Psidium friedrichsthalianum plants every 1-2 years, or when they become root-bound, typically in spring. Choose a pot that is one size larger than the current one and use a well-draining potting mix.

Mature trees may not require frequent repotting and can be top-dressed instead.