Water flatspine bursage sparingly, allowing the soil to dry out completely between waterings. It is highly drought-tolerant once established. Overwatering can lead to root rot, especially in poorly draining soils.

Focus on deep watering infrequently rather than frequent shallow watering.

Pruning is generally not necessary for flatspine bursage, as it maintains a compact, natural form. If desired, prune lightly after flowering to shape the plant or remove any dead or damaged stems.

Avoid heavy pruning, as it may stress the plant and reduce its hardiness.

Propagation is typically done by seed. Sow seeds in early spring, either indoors or directly outdoors after the last frost. Stratification (cold treatment) may improve germination rates.

Alternatively, cuttings can be taken from semi-hardwood in late summer, but success rates can vary.

Repotting is rarely needed for flatspine bursage, as it prefers to be slightly pot-bound and thrives in well-draining conditions. If it becomes necessary, repot in spring using a fast-draining potting mix.

Choose a pot only slightly larger than the current one to avoid excess moisture retention.