Water regularly during the growing season, allowing the soil to dry slightly between waterings. Reduce watering in winter.

Vitex altissima prefers consistently moist soil but can tolerate brief dry periods once established. Avoid waterlogged conditions, which can lead to root rot.

Prune in late winter or early spring before new growth begins. Remove dead, damaged, or crossing branches. To encourage bushier growth and more flowers, prune back stems by about one-third.

Heavy pruning can rejuvenate older plants.

Propagate by softwood cuttings taken in late spring or semi-hardwood cuttings in mid-summer. Root cuttings in a well-draining potting mix, keeping the soil consistently moist and providing bottom heat.

Seeds can be sown in spring, but germination can be slow.

Repot young plants annually in spring as needed. Mature plants can be repotted every 2-3 years or when root-bound. Use a well-draining potting mix.

Ensure the new pot has adequate drainage holes to prevent water accumulation around the roots.