Lavandula buchii prefers well-drained soil and should be watered sparingly, especially once established. Allow the soil to dry out completely between waterings to prevent root rot.

Overwatering is a common cause of failure for this species.

Prune Lavandula buchii in early spring before new growth emerges to maintain a compact shape and encourage flowering. Remove any dead or damaged stems. Avoid cutting back into old wood, as this can hinder re-sprouting.

Propagation is typically done through semi-hardwood cuttings taken in late summer. Select healthy stems, cut them to about 10-15 cm, and dip the base in rooting hormone.

Plant in a well-draining compost mix and keep moist in a protected environment.

Repot Lavandula buchii only when it becomes root-bound, usually every 2-3 years. Use a pot with drainage holes and a fast-draining potting mix, such as a blend of potting soil and perlite or grit.

Repot in spring before active growth begins.