Water regularly, allowing the soil to dry out slightly between waterings. Avoid overwatering, which can lead to root rot.

In hot, dry weather, more frequent watering may be necessary to maintain soil moisture and promote continuous blooming.

Deadhead spent flowers to encourage reblooming and maintain a tidy appearance.

A hard prune back by about half after the first flush of flowers in early summer will promote a second bloom and prevent the plant from becoming leggy and straggly. Prune again in late autumn.

Nepeta racemosa is easily propagated from stem cuttings taken in late spring or early summer. Softwood cuttings root readily in moist potting mix.

Division of established clumps in spring is also an effective method to increase plant numbers.

As a herbaceous perennial, Nepeta racemosa typically does not require frequent repotting. If grown in containers, repot every 2-3 years in spring as the plant becomes root-bound.

Use a well-draining potting mix to prevent waterlogging.