Water moderately, allowing the soil to dry slightly between waterings. In hotter months, increase frequency. Ensure good drainage to prevent waterlogging, which can lead to root rot.

Reduce watering during cooler, dormant periods to avoid over-saturation.

Prune to remove dead, damaged, or unsightly foliage. This can be done at any time of year. To maintain shape, lightly trim away any leggy growth.

Remove spent flower stalks to encourage continued blooming and prevent seed formation.

Propagate Astelia argyrocoma by division of established clumps during spring. Carefully separate the offsets, ensuring each piece has roots and some foliage. Plant the divisions in well-draining soil and water lightly.

Repot mature plants every 2-3 years or when they become root-bound. Use a well-draining potting mix. Choose a pot that is only slightly larger than the current one. Repot in spring before the main growing season begins.