Keep the soil consistently moist but not waterlogged. Allow the top centimeter of soil to dry out slightly between waterings. In hotter periods or drier climates, increase watering frequency.

Reduce watering in cooler months to prevent root rot. Ensure good drainage.

Pruning is generally not required for Asplenium septentrionale. Remove any dead, damaged, or discolored fronds at the base of the plant using clean, sharp scissors or a knife.

This helps maintain the plant's health and appearance.

Asplenium septentrionale is typically propagated by division of mature clumps in spring. Carefully separate the rhizomes, ensuring each division has healthy roots and a few fronds.

Pot divisions into well-draining compost.

Repot young plants annually, and mature plants every 2-3 years, or when they become root-bound. Use a well-draining, peat-based potting mix.

Choose a pot only slightly larger than the current one to avoid overwatering issues.