Brazilnut trees require consistent moisture, especially during establishment and fruiting. Water deeply when the top few centimeters of soil feel dry. Avoid waterlogged conditions, which can lead to root rot.

Reduce watering slightly during cooler, drier periods but never allow the soil to completely dry out.

Pruning for Brazilnut trees is generally minimal and focused on removing dead, damaged, or crossing branches. Young trees may benefit from formative pruning to establish a strong structure.

Avoid heavy pruning, as this can reduce fruit yield and stress the tree. Pruning is best done in the dry season.

Brazilnut trees are primarily propagated by seeds, which are recalcitrant and lose viability quickly. Seeds should be sown fresh in a well-draining medium. Germination can be slow and erratic.

Grafting is also used but is less common. Commercial propagation is challenging, contributing to their scarcity in cultivation.

Brazilnut trees are very difficult to grow as potted plants due to their large size and deep taproot system. They are not typically repotted. Once established in the ground, they should ideally remain undisturbed.

Young seedlings can be transplanted to larger containers only if absolutely necessary, with extreme care taken for the root system.