Fimbristylis acicularis prefers consistently moist soil. Water regularly to keep the substrate saturated, especially during the growing season. Avoid letting the soil dry out completely, as this can stress the plant.

Reduce watering slightly in cooler months but maintain a good level of moisture.

Pruning is generally minimal for Fimbristylis acicularis. Remove any dead or yellowing foliage as needed to maintain a tidy appearance and encourage new growth.

You can also trim back the plant lightly if it becomes leggy or overgrown to encourage a denser habit.

Fimbristylis acicularis can be propagated by division of established clumps in spring. Carefully separate the root ball into smaller sections, ensuring each section has viable roots and shoots.

Replant the divisions into suitable, moist substrate immediately.

Repot Fimbristylis acicularis when it becomes root-bound, typically every 1-2 years. Choose a pot that is slightly larger than the current one. Use a well-draining, moisture-retentive potting mix.

Repotting is best done in spring before active growth begins.