Water thoroughly when the potting medium is completely dry, typically every 7-14 days depending on environmental conditions. Avoid waterlogged soil, which can lead to root rot.

For air plants, soak in room temperature water for 20-30 minutes every 1-2 weeks or mist heavily multiple times a week. Ensure good air circulation after watering.

Pruning is generally not required for Tillandsia bergeri. Remove any dead or dried leaves by gently pulling them away from the base.

If pups (offsets) become too crowded, they can be gently separated once they are about one-third the size of the mother plant, but this is usually done during propagation.

Tillandsia bergeri is primarily propagated through offsets, also known as pups.

Once a pup reaches approximately one-third the size of the mother plant, it can be gently detached using a clean, sharp knife or by carefully pulling it away. Allow the cut end to callus for a few days before planting.

Tillandsia bergeri, being an epiphyte, does not require traditional repotting in soil. If grown in a container, ensure it is well-draining and loosely packed with a medium like bark or sphagnum moss.

If the plant becomes root-bound or the medium degrades, it can be gently transferred to a larger pot or fresh medium.