Water Quercus lusitanica regularly, especially during its first few years, to establish a deep root system. Once mature, it is drought-tolerant. Allow the soil to dry out slightly between waterings.

Avoid waterlogged conditions, which can lead to root rot. Reduce watering in winter.

Prune Quercus lusitanica primarily to remove dead, diseased, or crossing branches. This can be done in late winter or early spring before new growth begins. Light shaping can also be performed to maintain desired form.

Avoid heavy pruning, as it can stress the tree and make it susceptible to pests and diseases.

Propagation of Quercus lusitanica is typically done by seed, which requires a period of cold stratification. Collect seeds in autumn and sow them in a well-drained seed-starting mix.

Alternatively, grafting onto a suitable oak rootstock can be attempted, though this is more challenging and usually reserved for specific cultivars.

Repotting is generally not required for Quercus lusitanica as it is a tree best planted in its permanent location.

If grown in a container for a nursery setting, repot when the root system becomes pot-bound, typically every 2-3 years. Use a well-draining potting mix and a slightly larger container.