Water moderately when the top inch of soil feels dry. Avoid overwatering, as Ruellia prostrata can be susceptible to root rot. Reduce watering during cooler months.

Ensure good drainage to prevent waterlogged conditions, especially in containers.

Prune to maintain shape and encourage bushier growth. Deadhead spent flowers to promote continuous blooming. Lightly trim back leggy stems in late winter or early spring before new growth begins.

This helps keep the plant compact and attractive.

Propagate easily from stem cuttings taken in spring or summer. Root cuttings in moist potting mix or water. Division of established clumps is also effective, best done in spring.

Seeds can also be sown, though germination may be variable.

Repot annually or every two years, preferably in spring, when the plant becomes root-bound. Choose a pot one size larger with adequate drainage holes.

Use a well-draining potting mix to ensure healthy root development and prevent issues.