Rough horsetail thrives in consistently moist soil. Water thoroughly whenever the top few centimeters of soil begin to dry.

Avoid allowing the plant to stand in water, but never let the soil become completely dry, especially during warmer months. Reduced watering may be needed in cooler periods.

Prune to maintain desired shape and remove any dead or damaged stems. Cut stems back at the base using sharp shears.

This can be done at any time of year, but is most effective in late winter or early spring before new growth emerges, encouraging vigorous new shoots.

Propagation is best done by division of rhizomes in early spring or autumn. Carefully dig up the plant and separate sections of the rhizome, ensuring each piece has at least one shoot and some roots.

Replant immediately into moist soil.

Repot rough horsetail only when it becomes root-bound, typically every 2-3 years. Use a pot with drainage holes and a well-draining, humus-rich potting mix.

Choose a pot that is only slightly larger than the current one to avoid overwatering issues.