Water thoroughly when the top 2-3 cm of soil feels dry to the touch. Avoid overwatering, as Lavandula pinnata is susceptible to root rot. Allow the soil to dry out between waterings, especially during cooler months.

Reduce watering in winter to mimic its natural dry season.

Prune after flowering to shape the plant and encourage bushier growth. Remove spent flower spikes to prevent seed formation and direct energy into new blooms.

Avoid cutting into old, woody stems, as this can hinder regeneration. A light trim in early spring can also be beneficial.

Easily propagated from semi-hardwood cuttings taken in summer. Select healthy, non-flowering shoots, cut them into 7-10 cm lengths, and remove lower leaves.

Dip the cut end in rooting hormone and insert into a well-draining potting mix. Keep moist and warm until rooted.

Repot young plants annually or biennially in spring as they become root-bound. Mature plants can be left in their pots for longer periods.

Use a gritty, well-draining compost mix, such as a blend for succulents or cacti, to ensure good aeration and prevent waterlogging.