Tillandsia oerstediana prefers to be watered thoroughly once or twice a week, depending on environmental conditions. Allow the plant to dry out completely between waterings.

Misting is generally not sufficient; soaking the plant in water for 20-30 minutes is a better method. Ensure good air circulation after watering to prevent rot.

Pruning for Tillandsia oerstediana is minimal and mainly involves removing dead or dried leaves. This can be done at any time using clean, sharp scissors or a knife. Avoid removing healthy green parts of the leaves.

If the plant has produced pups, you can gently remove them once they are a reasonable size.

Tillandsia oerstediana readily propagates through 'pups' or offsets that grow from the base of the mother plant.

Once these pups reach about one-third the size of the parent plant and have developed their own root system, they can be carefully separated. The separated pup can then be mounted or grown independently.

Tillandsia oerstediana is an epiphyte and does not typically require repotting in the traditional sense. Instead of soil, it is best grown mounted on bark, driftwood, or in a basket with excellent air circulation.

If a plant becomes too large for its mount, it can be carefully removed and remounted, or its pups can be separated.