Water Spotted deadnettle regularly, especially during dry spells, to maintain consistent soil moisture. Allow the top inch of soil to dry out slightly between waterings.

Overwatering can lead to root rot, so ensure good drainage. Reduce watering in winter when growth slows.

Prune Spotted deadnettle to maintain shape and encourage bushier growth. Deadhead spent flower spikes to prolong blooming. Cut back stems by about one-third in mid-summer to prevent legginess and stimulate new flowering.

Remove any winter-damaged or dead foliage in early spring.

Propagate Spotted deadnettle easily from stem cuttings taken in late spring or early summer. Dip the cut end in rooting hormone and plant in moist, well-draining potting mix. Cuttings typically root within 3-4 weeks.

Division of established clumps in spring is also an effective method.

Repot established Spotted deadnettle every 2-3 years, or when the plant becomes root-bound. Choose a pot that is only slightly larger than the current one. Use a well-draining potting compost.

Repot in early spring before new growth begins. Ensure the new pot has adequate drainage holes.