Equisetum diffusum thrives in consistently moist conditions. Water regularly to keep the soil damp but not waterlogged, especially during warmer months. In drier periods, increase watering frequency.

Ensure good drainage to prevent root rot, as it prefers consistently wet environments.

Pruning is minimal and primarily cosmetic or for containment. Remove any dead or damaged stems at the base as needed.

If the plant spreads too aggressively in a confined space, trim back unwanted growth to maintain its shape and prevent it from overwhelming other plants.

Propagation is most successful through division of rhizomes in spring or autumn. Carefully dig up the plant and separate the thick, creeping rhizomes, ensuring each section has at least one bud.

Replant divisions immediately into moist soil.

Repotting is infrequent, typically only when the plant becomes pot-bound or needs dividing. Spring is the ideal time for repotting. Choose a larger container with good drainage and use a moist, well-draining potting mix.

Handle the rhizomes gently during the process.