Tuber Spike-Rush thrives in consistently moist to wet conditions. It can be grown in shallow water or in waterlogged soil.

Avoid allowing the substrate to dry out completely, as this can stress the plant and hinder its growth. Regular watering is essential, especially during warmer months.

Pruning is generally minimal for Tuber Spike-Rush. Remove any dead or yellowing stems as they appear to maintain a tidy appearance and prevent disease.

If the plant becomes too dense, you can thin it out by removing some of the older culms to encourage new growth.

Propagation is easily achieved by division. Carefully separate the rhizomes or tubers during repotting in spring. Each division should have at least a few healthy shoots and roots.

Alternatively, seeds can be sown in moist soil or water, though division is typically faster and more reliable.

Repotting is best done in the spring as new growth begins. If grown in a container, choose a pot that allows ample space for root development.

Tuber Spike-Rush prefers to be slightly pot-bound or can be planted directly into pond substrates. Ensure the new medium is well-draining but holds moisture.