Water Hispid Starbur regularly, especially during dry periods. Allow the top few centimeters of soil to dry out between waterings. Avoid overwatering, which can lead to root rot.

Ensure good drainage to prevent waterlogged conditions. Reduce watering in cooler months if grown in temperate climates.

Pruning is generally not essential for Hispid Starbur, as it is an annual. However, you can lightly prune to shape the plant or remove any leggy growth.

Deadheading spent flowers can encourage more blooms and prevent self-seeding if desired. Prune lightly in late spring or early summer.

Hispid Starbur is easily propagated from seeds. Sow seeds directly into the garden after the last frost, or start them indoors a few weeks prior. Seeds germinate readily in warm, well-drained soil.

It is also known to self-seed prolifically in suitable conditions.

Repotting is typically not necessary for Acanthospermum hispidum as it is an annual plant. If growing in containers and wishing to prolong its life, you may repot into a slightly larger container in spring if root-bound.

Ensure the new pot has adequate drainage holes.