Water woolly hedgenettle regularly, allowing the soil to dry out slightly between waterings. Overwatering can lead to root rot, especially in cooler temperatures. Ensure good drainage to prevent waterlogged conditions.

Reduce watering significantly in winter when the plant is dormant.

Prune woolly hedgenettle after flowering to maintain a tidy appearance and encourage a bushier growth habit. Deadhead spent flower stalks to prevent self-seeding, which can be vigorous.

You can also cut back the plant by about half in late spring or early summer to refresh its look.

Propagate woolly hedgenettle by division in spring or fall. Carefully dig up clumps and separate them into smaller sections, ensuring each section has roots and shoots.

Alternatively, take stem cuttings in late spring or early summer, dip them in rooting hormone, and plant in well-draining soil.

Repot woolly hedgenettle every 2-3 years, or when it becomes root-bound. Choose a pot that is only slightly larger than the current one. Use a well-draining potting mix, such as a cactus or succulent blend.

Repotting is best done in spring before new growth begins to emerge.