Keep the soil consistently moist, but not waterlogged. Water thoroughly when the top 2-3 cm of soil feels dry to the touch.

Avoid letting the soil dry out completely, as this can stress the plant and lead to browning fronds. Reduce watering slightly in cooler months.

Prune away any dead, damaged, or yellowing fronds at the base of the plant. This helps maintain a tidy appearance and encourages new growth.

You can also trim back overgrown fronds to manage the plant's size and shape, typically done in early spring before new growth emerges.

Adiantum chilense can be propagated by division of established clumps in spring. Carefully separate the rhizomes, ensuring each section has roots and at least one growing point.

Pot the divisions into small pots with well-draining, moist potting mix and keep them in a humid environment until established.

Repot Adiantum chilense every 2-3 years, or when it becomes root-bound. Choose a pot that is only slightly larger than the current one. Use a well-draining, peat-based potting mix.

Repotting is best done in early spring before the onset of active growth.