Vitex agnus-castus requires consistent watering during its first year to establish a strong root system.

Once established, it is highly drought-tolerant and needs infrequent, deep watering, especially during prolonged dry periods. Avoid overwatering, which can lead to root rot.

Prune Vitex agnus-castus in late winter or early spring, while the plant is dormant, to encourage vigorous growth and abundant summer blooms. Remove any dead, damaged, or crossing branches.

To maintain a desired shape, cut back about one-third of the previous year's growth. For a tree form, consistently remove suckers and lower branches to define a single trunk.

Vitex agnus-castus is readily propagated from softwood cuttings taken in late spring or early summer, or from hardwood cuttings in late autumn or winter.

Cuttings should be 4-6 inches long, dipped in rooting hormone, and placed in a well-draining potting mix. Keep the medium consistently moist and provide warmth for successful rooting.

Seeds can also be used, but often require cold stratification.

While primarily a landscape plant, young Vitex agnus-castus can be grown in large containers.

Repotting should be done every 2-3 years in early spring, moving the plant to a container one size larger to accommodate its root growth. Ensure the new pot has ample drainage holes.

Use a high-quality, well-draining potting mix suitable for shrubs and small trees to promote healthy development.