Water Bidens pilosa regularly when the top 2-3 cm of soil feels dry. Avoid waterlogging, as this can lead to root rot. In hot, dry weather, more frequent watering may be necessary.

Reduce watering slightly during cooler months or if the plant is not actively growing.

Prune Bidens pilosa to maintain shape and encourage bushier growth. Pinch back the tips of young stems regularly. Remove spent flowers to prevent unwanted seed production and prolong blooming.

Pruning can be done in spring or after flowering to manage size and vigor.

Bidens pilosa is easily propagated from seeds sown directly into the garden after the last frost or started indoors a few weeks prior. Cuttings can also be taken from healthy stems in spring or summer and rooted in moist soil or water.

Repot Bidens pilosa every 1-2 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 spring before active growth begins to minimize transplant shock.