Keep the soil consistently moist, but avoid waterlogging. Scleria achtenii prefers damp conditions. Water thoroughly when the top centimeter of soil begins to feel dry.

Reduce watering slightly during cooler months to prevent root rot, but never allow the soil to dry out completely.

Pruning is generally minimal for Scleria achtenii. Remove any dead, yellowed, or damaged leaves or stems as they appear to maintain the plant's health and appearance.

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

Scleria achtenii can be propagated by division of established clumps. In spring, carefully divide the root ball into smaller sections, ensuring each section has healthy roots and shoots.

Replant divisions in fresh, moist potting mix and keep them well-watered until established.

Repot Scleria achtenii every 1-2 years, or when the plant becomes root-bound. Use a well-draining potting mix, preferably one rich in organic matter.

Choose a pot only slightly larger than the current one to avoid overwatering issues. Repot in spring before the main growth period.