Polypodium arcanum prefers consistently moist soil but dislikes waterlogging. Water thoroughly when the top 2-3 cm of soil feels dry to the touch.

Reduce watering slightly during cooler, dormant periods to prevent root rot. Ensure good drainage in the pot to avoid standing water.

Pruning for Polypodium arcanum is minimal. Remove any dead, damaged, or yellowing fronds as they appear to maintain a tidy appearance and encourage healthy new growth.

This can be done at any time of year using clean, sharp scissors or pruning shears.

Propagate Polypodium arcanum by division. In spring, carefully divide established plants into smaller sections, ensuring each piece has roots and a few fronds.

Pot the divisions in a well-draining potting mix and keep them consistently moist until new growth is observed.

Repot Polypodium arcanum every 2-3 years or when it becomes root-bound. Use a slightly larger pot with fresh, well-draining potting mix.

Spring is the ideal time for repotting, allowing the plant to establish itself before the active growing season.