Keep soil consistently moist but not waterlogged, especially during dry periods. Water deeply at the base of the plant, allowing the soil to dry slightly between waterings.

Avoid overhead watering, which can promote fungal diseases. Reduce watering in winter when the plant is dormant.

Prune immediately after flowering to shape the plant and remove dead or damaged branches. Light pruning can be done to maintain size and encourage bushier growth.

Avoid heavy pruning, especially on established plants, as it can reduce flowering for the following year.

Best propagated by semi-hardwood cuttings taken in summer. Select healthy shoots, treat with rooting hormone, and plant in a well-draining, moist medium.

Alternatively, layering can be attempted in late spring or early summer. Seed propagation is possible but often results in variable offspring.

Container-grown Rhododendron catawbiense rarely needs frequent repotting. If root-bound, repot in early spring using an acidic, well-draining potting mix.

Ensure the new container is only slightly larger than the previous one. Do not plant too deeply; the top of the root ball should be level with the soil surface.