Allow soil to dry out between waterings. Water thoroughly when the top 2-3 cm of soil feels dry. Reduce watering significantly during winter dormancy to prevent root rot.

Ensure good drainage to avoid waterlogged conditions.

Prune to maintain shape and remove dead or damaged stems. Light pruning can be done in spring after the risk of frost has passed. Avoid heavy pruning, as Astragalus mongholicus generally has a naturally sprawling habit.

Propagation is best achieved through seeds sown in spring or early autumn. Stratification may improve germination rates. Cuttings are generally less successful. Ensure seeds are from a reliable source.

Repot young plants annually in spring. Mature plants require less frequent repotting, perhaps every 2-3 years. Use a well-draining potting mix. Ensure the new pot is only slightly larger than the previous one.