Mentha cervina prefers consistently moist soil, especially during warmer months. Water thoroughly when the top centimeter of soil feels dry. Avoid waterlogging, as this can lead to root rot.

Reduce watering slightly in cooler periods, but never allow the soil to dry out completely.

Prune regularly to maintain a compact shape and encourage bushier growth. Pinch back the tips of stems throughout the growing season.

For a significant rejuvenation, you can cut back plants by about a third in early spring. Remove any dead or faded flower stalks.

Mentha cervina is easily propagated by stem cuttings. Take 4-6 inch cuttings in spring or summer, remove lower leaves, and place them in water or moist potting mix. Roots usually form within a few weeks.

Division of established clumps in spring is also effective.

Repot Mentha cervina every 2-3 years, or when the plant becomes root-bound. Spring is the ideal time. Choose a pot that is only slightly larger than the current one, with good drainage.

Use a well-draining potting mix, perhaps with added compost.