Water regularly during the first few years to establish a strong root system. Once established, Pinus pinaster is drought-tolerant and prefers infrequent, deep watering.

Avoid waterlogged soil, as this can lead to root rot.

Pruning is typically minimal for Maritime Pines. Remove dead, damaged, or crossing branches to maintain tree health and structure. Avoid heavy pruning, as it can stress the tree and make it susceptible to disease.

Propagation is usually done by seed. Sow seeds in well-draining soil in autumn or early spring. Stratification may improve germination rates. Cuttings are generally difficult to root for this species.

Repotting is not a common practice for mature Maritime Pines due to their size and deep root systems. Young saplings can be repotted as needed into slightly larger containers, using well-draining soil, typically in spring.