Keep the soil consistently moist but not waterlogged. Allow the top inch of soil to dry out slightly between waterings.

Calathea brenesii prefers distilled, rainwater, or filtered water to prevent mineral buildup on its leaves, which can cause browning.

Prune away any yellowed, brown, or damaged leaves at the base of the plant using clean, sharp scissors or pruners. This helps maintain the plant's aesthetic appeal and directs energy towards new growth.

Remove spent flower stalks to encourage further blooming.

Calathea brenesii can be propagated by division. When repotting, carefully separate the rhizomes into smaller sections, ensuring each section has at least a few leaves and roots.

Replant the divisions into their own pots with fresh potting mix.

Repot your Calathea brenesii every 1-2 years, or when it becomes root-bound. Choose a pot that is one size larger than the current one.

Use a well-draining potting mix, such as a blend of peat moss, perlite, and potting soil, to ensure good aeration.