Water Solanum laciniatum regularly, especially during dry periods. Aim to keep the soil consistently moist but not waterlogged. Reduce watering in winter when the plant's growth slows.

Ensure good drainage to prevent root rot, as this species is sensitive to excessive moisture.

Prune Solanum laciniatum in late winter or early spring before new growth begins. Remove any dead, damaged, or crossing branches to maintain the plant's shape and encourage bushier growth.

Pruning can also help control size and promote flowering in subsequent seasons.

Propagate Solanum laciniatum from semi-hardwood cuttings taken in summer or from seeds sown in spring. Cuttings should be treated with rooting hormone and placed in a well-draining medium.

Seed germination can be erratic; stratification may improve success. Protect young plants from frost.

Repot Solanum laciniatum every 2-3 years, or when it becomes root-bound. Use a good quality, well-draining potting mix. Repot in spring before the active growing season begins.

Choose a pot that is only slightly larger than the current one to avoid over-potting and waterlogging.