Keep the soil consistently moist, especially during dry periods and the first year after planting. Avoid waterlogging, as this can lead to root rot.

Water deeply at the base of the plant, ensuring the root zone is well-saturated. Reduce watering in winter when the plant is dormant.

Prune only to remove dead, damaged, or crossing branches. Lightly shape after flowering if necessary to maintain form. Avoid heavy pruning, as Rhododendron maximum can be slow to recover.

Deadheading spent flowers can improve appearance and energy allocation for future blooms.

Propagation is typically done by grafting or layering. Layering involves bending a low-hanging branch to the ground, making a wound on the underside, and covering it with soil to encourage root formation.

Grafting is often used for specific cultivars to ensure desired characteristics.

Repotting is generally not necessary for established landscape plants. Container-grown specimens should be repotted when they become root-bound, typically every 2-3 years.

Use a well-draining potting mix designed for azaleas and rhododendrons. Ensure the new pot is only slightly larger than the current one.