Water Helminthotheca comosa regularly, especially during dry periods, ensuring the soil remains consistently moist but not waterlogged. Allow the top layer of soil to dry slightly between waterings to prevent root rot.

Reduce watering in winter when the plant is dormant.

Prune Helminthotheca comosa after flowering to maintain a tidy shape and encourage bushier growth. Remove spent flower stalks and any dead or damaged foliage.

Light pruning can be done anytime to control size or shape, but heavy pruning is best avoided.

Propagate Helminthotheca comosa by sowing seeds in spring, either directly outdoors or in a greenhouse. Seeds germinate best in well-draining soil with consistent moisture and warmth.

Young plants can be transplanted once they are large enough to handle.

Repot Helminthotheca comosa every 2-3 years or when it becomes root-bound. Choose a pot that is slightly larger than the current one. Use a well-draining potting mix.

Repotting is best done in early spring before the active growing season begins.